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Hyaluronic Acid Intensifier (H.A.) Hyaluronic acid serum

Hyaluronic Acid Intensifier (H.A.) is rated 4.7 out of 5 by 357.
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A multi-functional corrective serum to help amplify skin’s hyaluronic acid levels

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Product Details

H.A. Intensifier is a multi-beneficial corrective serum proven to amplify skin’s hyaluronic acid levels. This unique formulation contains a high concentration of pure hyaluronic acid, proxylane™, and botanical extracts of licorice root and purple rice to support skin’s hyaluronic acid levels and deliver surface hydration, helping improve the visible appearance of firmness, smoothness, and facial plumpness. This hyaluronic acid serum may be used as part of a home skincare regimen after dermal fillers; always consult with your physician for individual at-home advice.

  • Amplifies skin’s hyaluronic acid levels by 30%
  • Reduces the look of crow’s feet, nasolabial folds (parenthesis around the mouth or laugh lines), and marionette lines (lines from the corners of the mouth down to chin) for smoother, firmer skin
  • Delivers long lasting hydration to visibly improve skin’s texture
  • Unique serum-gel texture format creates a smooth canvas on skin
  • Paraben- and dye-free, ideal for all skin types
  • Can be used as home care after dermal fillers; always consult with a physician for individual regimen recommendations

Learn more about the science behind H.A. Intensifier

How To Use

Once or twice daily, apply 4-6 drops to the palm of the hand and dab onto forehead, cheeks, chin, and neck. Blend the product into skin. If using in the morning, apply after a SkinCeuticals vitamin C antioxidant serum and before a SkinCeuticals sunscreen. If using with a retinol at night, apply after retinol.

  • Visible Results

  • before

    In a 12-week clinical study, H.A. Intensifier significantly improved the appearance of key aging indicators:

    • 23% improvement in plumpness
    • 9% decrease in sagginess
    • 11% improvement in firmness
    • 13% improvement in elasticity
    • 18% improvement in texture

    See Protocol

    Protocol: Average results shown. A 12-week, single-center, clinical study was conducted on 59 females, ages 42-60, with mild to moderate facial sagging and loss of firmness, rough skin texture, nasolabial fold wrinkles, marionette lines, and presence of fine lines/wrinkles in the crow’s feet area. H.A. Intensifier was used twice daily in conjunction with SkinCeuticals Gentle Cleanser and a sunscreen. Efficacy and tolerability evaluations were conducted at baseline and at weeks 4, 8, and 12.

  • Science & Proof

  • Science

    Hyaluronic acid naturally occurs in the skin and plays an important role in maintaining moisture. This essential molecule however has a short lifecycle in skin, with 30%-50% degrading every 24 hours. With age, the skin’s ability to produce hyaluronic acid decreases. Production starts to decline in the 20s and this decline accelerates in the 40s. Decreased production rapid degradation of hyaluronic acid contribute to signs of aging, including decreased firmness, less facial plumpness, and rough texture.

    While hyaluronic acid is a powerful hydrator, the size of the hyaluronic acid molecules are too large for optimal skin absorption. H.A. Intensifier uniquely combines surface-hydrating hyaluronic acid with 10% proxylane™ and an optimal concentration of licorice and purple rice extracts to support skin’s hyaluronic acid levels.

Key Ingredients

  • 10% Proxylane™
  • 2.0% Licorice Root Extract (dipotassium glycyrrhizate) + 0.2% Purple Rice Extract
  • 1.3% Hyaluronic Acid

Supports skin’s hyaluronic acid levels to help improve the appearance of skin firmness.

Learn more about Proxylane™

See all ingredients


Physician Insight

Physician image

We initially had our injectable patients use H.A. Intensifier to enhance their results but found the feedback so positive that we now recommend it to most patients looking to diminish signs of aging.

Dr. Jerome Potozkin – Potozkin MD

Learn about Dr. Jerome Potozkin

Complete Your Regimen


Rated 5 out of 5 by from LOVE THIS! I've been using this serum for at least a couple of weeks now and really love it. I put it on at night with my other nightly routine and I can really tell the difference in the morning! I forgot it the other night and knew exactly what I forgot when I got up! It is a really good primer for your foundation in the morning, it gives a nice glow! This is one product I don't think I'll be without in the future!
Date published: 2017-03-21
Rated 4 out of 5 by from So good! The coverage and feel of this foundation is amazing. It’s literally weightless and leaves your skin with a natural finish. The coverage is incredible, though it’s most definitely full coverage it leaves your skin looking as if it is your own. My only complaint is that it does cling to dry patches. I tend to have dryer skin in the winter and unless I exfoliate more often this could resent a problem for me wearing it. Otherwise this is a great foundation with an admirable shade range. I did receive this product as a free sample in exchange for an honest and thoughtful review. I received this product complimentary for review purposes.
Date published: 2018-01-22
Rated 4 out of 5 by from Anti-aging Let me preface this by saying that I didn’t give it 5 stars because I haven’t used it long enough to see concrete results. I have given this product 4 stars because I am happy with what I have seen. I’m at the age where I want to prevent aging (don’t we all) and so want to use products that will aid in sag and crows feet prevention. After cleansing my face, I apply this product one a day before bedtime after using retinol. I have found that my complexion has improved and my face feels firmer, especially around the mouth. The serum has a gel-like consistency and absorbs pretty quickly. It feels hydrating and I can tell that it is from the glow that I can see when I wake up in the morning.
Date published: 2017-12-06
Rated 5 out of 5 by from Marvelous Product for Aging Skin At the suggestion of my skincare professional, I started using this product in conjunction with the Replenishing Cleanser Cream (started first) and the Triple Lipid Restore (added second). Until I added the Hyaluronic product, there was minimal difference. Adding the Hyaluronic made ALL the difference. In a month, my skin was plumper, smoother, more supple and no longer dry and dull. I am 68 years old ... and live in a dry climate 6 mos of the year. I do not have a lot of facials, but I do have a machine micro dermbrasion every three weeks. I use the Triple Lipid Restore in the morning right after cleansing. After five minutes, I apply my usual moisturizing products on face/around eye. At night, I do the same but replace the Triple Lipid with the Hyaluronic.
Date published: 2018-06-02
Rated 5 out of 5 by from Love! Received a sample size complimentary to review. Not sure if I’ll be able to use long enough to see full results but honestly loved the product right away. Feels great on skin and saw my dry areas feel and look so much better. I have sensitive and acne prone skin but this has been gentle and have seen zero negative side affects.
Date published: 2017-11-30
Rated 5 out of 5 by from Glowing skin I love how soft my skin felt after just one use. I have sensitive skin and thr product was not drying or oily which i liked very much. The product is a bit thick but once its on the skin it applies very smoothly . After two days of using the product my skin has an even tone and a great glow which i love .
Date published: 2017-12-04
Rated 5 out of 5 by from So moisturizing! I received a sample of this product from Influenster and Skinceuticals to try for free. I decided to try this product on a day my skin was really angry at me. My sensitive skin had been put through the ringer yesterday, applying 2 separate make up looks. It was extremely cold when I went out and about today. Tonight when I put this on before bed, it felt amazingly moisturizing. It felt so nice going on my sensitive and angry skin. I know that this product will be wonderful to use on a daily basis and keep my skin looking and feeling great!
Date published: 2017-12-03
Rated 5 out of 5 by from New favorite! I have always wanted to try out a syrum and after trying this product i am amazed at how much my skin has changed. I have been noticing fine lines on my forehead and have been wanting to try something out to help reduce those lines. I use this syrum every night and in the morning i can definitely tell the difference. The lines have been fading and looking smoother which i am so happy about! I definitely recommend using this with a good moisturizer daily and you will be in love! I received this product free for testing and i am definitely going to purchase after noticing a big difference in my skin.
Date published: 2017-12-02
Rated 4 out of 5 by from Revitalizing and brightening! I received the Hyaluronic Acid Intensifier complimentary and I really enjoyed this product! My anti aging concerns are mostly the areas around my eyes, fine lines and general sagging and a tired look. I applied the product to my entire face and I loved the bright tone I immediately noticed and the fresh look it gave me. I first used it before applying moisturizer but found that it applied better when I mixed it with my moisturizer. I did notice that the area around my eyes was looking fresher and healthier, though I'm not sure if my complimentary sample was enough to begin to see a full difference. Overall though, I seriously loved the way this product left my skin feeling and looking.
Date published: 2018-01-12
Rated 4 out of 5 by from Good but could be great I like this product and how it feels. Too early to tell on long term results but I love most SkinCeuticals products I have used. What is keeping me from loving this is the dropper bottle. It seems like it would work much better in a pump type bottle like the AOX Eye Gel. That is a big negative for me and could keep me from repurchasing.
Date published: 2018-10-04
Rated 5 out of 5 by from Anazing have been using the HA Intensifier for 4 weeks. I love this new serum. I am 52 and have been using SkinCeuticals products for 13 years now. This serum has a lovely berry color to it, although it does not look like berry when put on your face. I use this in the morning after my CE Ferulic serum. The funny part, I couldn't figure out that when I licked the edge of my mouth, I kept tasting something sweet. I figured it out, it is the licorice root in the serum. The only thing I am not fond of is the dropper that comes with the bottle. It is difficult to get the product out of the dropper. Maybe it is because the serum is a bit on the thick side. This is definitely a staple in my SkinCeuticals regimen.
Date published: 2017-12-08
Rated 5 out of 5 by from Works well My dermatologist recommended this product to me. Using the first bottle, my skin felt better, more comfortable and soft to the touch. I’m now almost done with my second bottle, and now I am able to see a difference in how my skin looks. I have deep lines around my mouth, and they are definitely less pronounced. My neck and under my chin are a bit saggy and prone to chafing, The area appears a bit more firm, and the chafing has subsided, making the area appear smoother. I will be getting another bottle!
Date published: 2018-10-30
Rated 5 out of 5 by from Winter Skin Savior! I am absolutely in love with the Skin Ceuticals H.A. Intensifier! When I received a complimentary deluxe sample of this product from Influenster, I was thrilled because I had been wanting to try this serum out. Turns out, it lives up to the hype and so much more! I have since repurchased the full size and use it every evening. I always struggle with super dry winter skin, but this serum has made all the difference! I couldn’t be more happy. Thanks so much to Influenster for giving me a chance to try this serum and to Skin Ceuticals for always making amazing, high quality skincare.
Date published: 2018-01-04
Rated 5 out of 5 by from A must have for glowy skin and get rid of lines! I can’t believe how amazing this product is! I used it at morning and night after cleansing and toner but before my Triple Lipid Restore 2:4:2 Moisturizer and it works wonderfully. After like 3 weeks I could notice that the smile lines reduced significantly while using makeup and left my skin glowy and smooth. I mean, I’m 25 years old so anti-aging is not my main concern but I’m aware starting soon is beneficial for your skin. Definitely I recommend it for more mature women and young women looking for a anti-aging routine! I received this product as a free sample for testing.
Date published: 2017-12-20
Date published: 2018-09-05
Rated 4 out of 5 by from So far so good! I had been researching the top Hyaluronic Acid serums and recently discovered the HYALURONIC ACID INTENSIFIER (H.A.). The ingredients seemed super impressive so I added it to my wishlist and was pleasantly surprised to receive a sample via Influenster. So far I have noticed some improvement in my skin looking a bit smoother and fine lines reduced. Would love to give this a try for a full month in order to determine if it will become my holy grail HA serum!
Date published: 2017-12-04
Rated 4 out of 5 by from A Solid Serum for a Well-Rounded Skincare Routine The difficult thing about receiving samples to review is that sometimes you get a product that really requires long-term use to give a solid review. This serum seems like a solid purchase for people living in dry climates or treating their wrinkles. Hyaluronic acid essentially pulls moisture from the air into your skin, plumping it from the inside out, so, really, regardless of your skintype, age, or concerns, you can't go wrong with this serum. And, because I find that a lot of people don't know when to use serum, it goes: wash, tone, essences, serums, moisturizer.
Date published: 2017-12-08
Rated 4 out of 5 by from Good product! I received this product as a sample. I think that you can see a little difference at first use but in order to really see the whole change, you need the full size bottle to see the change. This product says that it will improve lines but im 28 years old, i don't really have such strong skin lines. However it´s never to late to start doing this, so i think this is also a great product to avoid the apparition of them. I have dry skin and i did really felt that i had an improvement, my skin felt smooth and hydrated at the first application. I will for sure recommend this.
Date published: 2018-01-11
Rated 5 out of 5 by from Love love love this I received this complimentary for review purposes. This product is amazing! Prior to this I was using a moisture booster from Dr Dennis Gross, but I love that this one is a serum as well. I used this day and night for two weeks and noticed a huge difference in my skin. I’ve gotten less oily since my skin is not as dehydrated anymore! My makeup looks better, I’ve gotten so many compliments on my skin. Even my husband, has been telling me how good my skin looks. I’m assuming it’s this because it the only thing I’ve changed. I’m a skincare junkie and this is a must have!
Date published: 2018-01-14
Rated 5 out of 5 by from Glowing skin! I received this product complementary from Influenster! It is a beautiful product and leaves my skin healthy and glowing once I am finished with the sample I will definitely purchase the full-size bottle. I keep it in the refrigerator as it feels nice and cooling on the skin my skin looks nice and plump and make up blaze beautiful on top of it perfect product! I received this product complementary from influenced her! It is a beautiful product and leaves my skin healthy and glowing once I am finished with the sample I will definitely purchase the full-size bottle. I keep it in the refrigerator as it feels nice and cooling on the skin my skin looks nice and plump and make up Lays beautiful on top of it perfect product!
Date published: 2018-01-15
Rated 4 out of 5 by from Leaves skin feeling so smooth! I received this product by Influenster at no cost. I'm glad I got my hands on it because I've been wearing it ever since. I don't use this product before applying makeup because the makeup tends to sit on top of my face if I do that. I typically use this product at night after moisturizing. I started being more cautious about aging spots and wrinkles, and I definitely think this product will help my skin. I also use it on my hands and feet to moisturize before going to bed. I will definitely be recommending this product to anyone who has dry and combination skin.
Date published: 2018-01-05
Rated 5 out of 5 by from Excellent Product and Will Continue Its Use I am over 60 years old. I have used this product for several months, am very happy with it and plan to continue its use. This product has decreased the lines on my upper lip and made my marionette lines and nasolabial fold wrinkles less pronounced. Overall, I have a fresher look. It is one of the best products I have tried for aging skin. My skin has responded to this product better than shown in the short video on the Skinceuticals website.
Date published: 2018-01-30
Rated 5 out of 5 by from Put life back into my skin Loved the sample of this that I received and am so sad it's almost out! I saw a noticeable difference in my skin while using this, leaving it plumper, more vibrant and a reduction in fine lines. This stuff is pricey but worth it, and I'll be purchasing the full size version soon! I already had be using CE Ferulic for the past few months, but really see the complete picture by layering this on as well. Skinceuticals for the win!!
Date published: 2018-01-15
Rated 5 out of 5 by from Wow! In love with this product If you want to look younger just like after a peeling the Hyaluronic Acid Intensifier (H.A) is the answer. You know why? because this product anti-aging really works. The corrective serum indeed amplified the skin elasticity, firmness and plumpness. I have mix skin and I have been applying some drops on the driest areas of my face and the roughness becomes invisible right away and really improves the appearance of the fine lines! I’m so satisfied with this product and makes my face glow. I apply this product before my make up and it works incredibly since it makes the texture of my face ideal and works better than a primer for sure! You won’t regret about expending your money on a great and professional product with the brand of SkinCeuticals
Date published: 2017-12-02
Rated 5 out of 5 by from Love It!! I've been using this product for a few weeks now. This is great stuff! My fine lines around the eyes, forehead, lips & mouth have been reduced &/or are barely there! I agree with one reviewer the product is a bit difficult to get out of the dropper, but that's because it is on the thicker side. A small price to pay for less visible lines & softer skin. I highly recommend!!!
Date published: 2017-06-27
Rated 5 out of 5 by from Love it I have been reading about the benefits of hyaluronic acid for a while now, but I wasn't sure I needed to add another product to my skincare regimen. I received a sample for free to test from Influenster. I'm so glad I got it. I definitely noticed that my skin looked more hydrated and smoother. I liked the results enough to purchase a bottle, and it is a happy addition to my skincare regimen. I like to use this after applying Skinceuticals Phloretin CF in the morning or at night after applying a retinoid/retin-A. It's a winner for me!
Date published: 2017-12-20
Rated 5 out of 5 by from Skincare Holy Grail I’ve been a huge skinceuticals fan for many years and was so excited when I received this for free for testing purposes. I’m 28 years old and have acne prone combination skin. Over the past few months I have noticed my skin texture worsen. I believe due to the fact my skin has changed and products need to change as well. In about a week I noticed a huge difference to my skins texture. It’s not only smoother but firmer. I’m definitely investing in a bottle of these. After reading the reviews I’m excited to try this out as a primer!
Date published: 2018-01-17
Rated 4 out of 5 by from Hyaluronic Acid I received this item for free to sample for my honest review from Influenster. I was surprised at the price of this item, but I could tell after using it a few times that it was for a good reason. The product really works! It made my skin feel nice and hydrated. I wish the sample was slightly larger so that I could tell if the long-term effects would be good. I also did not love the scent of it, which was the reason I am marking off one star. I am not sure if I would purchase this, but I will definitely recommend it to others!
Date published: 2018-01-24
Rated 5 out of 5 by from Amazing Serum! I don't typically use a serum with my foundation in the morning...until now! I received this product as a sample, and am LOVING all of the benefits! My dry skin is much smoother, the makeup doesn't settle at all throughout the day, and the overall comfort and glow of my face are just so much better when I use this serum. It's kind of thick and tough to get out of the bottle with the dropper, but it is so worth it for the end result. I plan on continuing to buy the full size once my sample is gone! Worth the money for sure.
Date published: 2018-01-08
Rated 5 out of 5 by from My favorite This is the best product of any skin care line that I’ve ever used. I’m in my mid forties and have constantly looked for great skin care products but never truly been ecstatic until using this. Within a short period of time, I’ve seen so much improvement in the overall appearance of my skin! I love all of your products!
Date published: 2018-10-14
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