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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 362.
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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 Perfect For Firming and Creating a Healthy Glow! I received this product as a free sample for testing. I loved it so much I had to purchase a full-sized bottle! I use this serum in the morning and at night before I go to sleep. The elasticity for my skin has been drastic and I keep it in my fridge and use it cold! This is my pro tip for all liquid products for my skin care. I really like this product because it has given me a healthy glow in the past couple of weeks that I don't find during the dry, winter season!
Date published: 2018-01-10
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 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 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 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 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 3 out of 5 by from Inconsistency in color and texture I received a small sample of H.A. Intensifier in an envelope and it was a purple serum, easy to apply and spread despite it being somehow dense. Few days later, I bought a Skinceuticals product and received a small bottle (complimentary) of H.A. Intensifier, but this product has a different color (dark orange, almost brown) and texture (much denser). I am wondering if this last bottle is decomposed or something happened to it during transit. It makes me wonder also about the quality of the H.A. Intensifier I might receive if I purchase a full-size bottle, given the strong variation between batches of the H.A. Intensifier.
Date published: 2019-01-03
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 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 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 I'm well-mature and this is good stuff. Got a free sample with my paid order. Been using SkinCeuticals for 10 years. To get a better idea of how effective it would be I tried it only on my upper lip fine lines and the marionette lines. I saw an immediate improvement. It is heavy some of the time. Perhaps it depends on how well I wash my face beforehand, or if I apply it over or under the B5 gel. But these results are worth that minor quirk. I've been applying it 2x per day. Next I'll try it on the crow's feet. I have been using the B5 hydrating gel, which performed nicely, but this HA is a nice boost for my skin. Thanks for the sample.
Date published: 2019-01-14
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 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 Amazing products I bought the daily and night moisturizer along with CE ferulic and absolutely LOVE every product. The cost is pricy but definitely worth it. I am about to order my next bottle of serum and considering trying other products. I would highly recommend these three products!
Date published: 2018-12-03
Rated 5 out of 5 by from Less wrinkles! I love this product. I studied for months before I purchased (because of the price), and I have not regretted the splurge one it. I've had a little over a month and I have a lot of improvement with the wrinkles on my forehead and my crows feet. This is now a necessity!
Date published: 2018-12-06
Rated 5 out of 5 by from My Go-To Serum I am one who suffers from very dry skin year-round. I am always trying new products in hopes of finding a product that truly shows lasting results. I have finally found it! This serum is amazing! I apply It every morning and night and after only a short time of using this I can already see such a dramatic improvement in my skin. My face is smoother and I can actually see the change in firmness! I am amazed! I love that is absorbs quickly but doesn’t disappear after a few minutes. The results last throughout the day. It has shown results faster than any other product I’ve tried and I’m comparing this to others that cost way more than this one. I am a fan for life and it is a staple on my vanity. Thank you so much for making a product that truly does all that is promises!
Date published: 2017-12-01
Rated 4 out of 5 by from You can feel something working instantly I have sensitive, oily skin and was nervous to try this at first because of the name “intensifier” I received this product for free for review and as soon as I cleansed my skin and applied this product I could instantly feel something working on my skin. It dries quickly, but I think it’s helping with the redness on my cheeks and the fine lines underneath my eyes. I haven’t been using it quite long enough to show major results, however I’m really hoping this will be nice to keep my skin plump and wrinkle free
Date published: 2017-11-30
Rated 3 out of 5 by from I guess I'm the only one not in love! I purchased a bottle and was not a tester nor did I receive a free sample. My esthetician recommended this product for my sensitive skin. This product is definitely moisturizing and my skin certainly feels soft when I use it but my makeup looks horrible when applied after using this product. It looks caked and unnatural- it's almost as if the product creates too much of a barrier on my skin and my makeup can't set properly. As such, I'm only using the product at night. I'll keep using it as a night product.
Date published: 2018-02-15
Rated 5 out of 5 by from IN LOVE!!! I received this product as a free sample from Influenster and I just sincerely fell in love, I didn't really knew what Hyaluronic Acid is until this campaign, I started doing my research and felt really excited to try this and now I want a bottle for my own, I love makes my skin look radiant & feeling plumper, I use it twice a day and I have seen noticeable changes on my skin, even little pimples around my forehead have improved. Totally recommend this even if you have sensitive skin (which is my case!)
Date published: 2017-12-31
Rated 5 out of 5 by from Hyaluronic Acid Intensifier is amazing! I have used Skin Ceuticals products for several years now. I use the sunscreen, retinol, clay mask, moisturizer, CE Ferlic, eye serum and b gel. I just recently ordered the hyaluronic acid intensifier. In a week a noticed a huge difference in the texture of my skin. Much softer, smoother and skin is glowing. I like the consistency of the product. It doesn’t drip when you take it out of the bottle like CE ferlic. And a little goes a long way. I use it morning and night. I love it and highly recommend!
Date published: 2017-10-06
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 Influenster Review I was sent this sample for review via influenster. My skin type is combination (oily t-zone and normal-dry everywhere else). I was using the Clinique moisture surge serum recently and boy does this serum has it beat! it's a beautiful thick consistency but doesn't leave the face feeling too greasy. I really feel like this Hyaluronic acid penetrates the skin on another level and allows your moisturizer to really do the trick. I have even been less oily because my skin hasn't needed the extra moisture.
Date published: 2018-01-07
Rated 5 out of 5 by from Fantastic product! I am a big advocate of taking care of my skin and making sure I nourish it and I really like this new HA serum. I have combination/sensitive skin and it did not bother my skin in any way and I felt that it was starting to work immediately upon the first application. Even after using this product for a week I noticed my skin looked healthy and it had a nice glow! I received this product complimentary from Influenster but it is something I will definitely continue using and purchasing in the future.
Date published: 2018-01-09
Rated 4 out of 5 by from Very moisturizing! I loved this serum but I just wish I had the full size and notice major improvements in my skin! I liked it felt thick on my skin and it gave a glow to my skin. I used for around two weeks and I noticed a glowy skin and even some dull spots on my face were fading away. Also, this delivered immediate hydration and plumping, skin felt smooth and stayed that way all day. Definitely, I'll try to purchase the full size. I highly recommend this product for more mature skin, I feel it would work wonders!
Date published: 2018-01-12
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
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