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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 441.
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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 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 One time only Amazing! I received a sample through mail. I thought well why not give this a try. My skin is very dry and damaged from cancer treatments twice and radiation. Now diagnosed with Sarcoidosis also affecting my skin. I have a constant layer of dry skin. I used the serum and that whole layer of dry skin just came off. I haven't been able to use makeup in a very long time. My dry skin just looks worse and makeup makes it look more visible. Really notice a change this might be the product my skin needs. Sadly I immediately came online to see where I can purchase and I couldn't afford this. Thank you for the sample
Date published: 2018-12-21
Rated 2 out of 5 by from Great product. Package fail I have used this product for a month and although I do like it a lot, I will not purchase again because of the packaging. It is misleading how much actual product you receive. It appears the bottle is full but when I could not get more out of the pump, I opened it up and the product is contained in a small plastic tube inside the bottle. I love the skinCeuticals products but this one is a miss.
Date published: 2019-09-23
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 5 out of 5 by from Love it! It is definitely worth the investment. My skin is so much smoother and it glows. I have a pretty good skin routine however this stepped it up a notch. I get compliments every where I go. I'm all about prevention so this is a added bonus and no one believes my real age! You can call me the Black Jlo(love her).. Note, I do get facials every 2-3 months, I workout, I drink cerely juice, I sauna bath, and I take mineral supplements :) All work together
Date published: 2019-02-15
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 3 out of 5 by from Wonderful product—absolutely horrible design I absolutely love this product. However, the packaging in the bottle will not allow all of the product to be released. It is unlikely that I would purchase again with such a poor design. At this price point, product should not be “captured” in the bottle and end up in the trash.
Date published: 2019-09-19
Rated 4 out of 5 by from Hydrating Serum I got a sample of the HA Intensifier with a Skinceuticals purchase I made. I'm not sure which product, or if the combination of products, gave me results, but I have seen results in a short amount of time. My face was uncomfortably dry and tight. Since using this product, my skin feels healthy and looks dewy. I also have extremely sensitive skin and will get rashes and hives to certain ingredients, but have had no reaction to Skinceuticals products! This serum is not a liquid like other serums - it has a milky consistency and no smell, which is a plus!
Date published: 2019-04-22
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 3 out of 5 by from Causes sunscreen to rub off and pile on skin Love the texture of the product and the feel of it on my skin. The problem I have is when it’s applied under my Skinceuticals sunscreen it causes flaking and piling (sort of the appearance of dead skin flakes). When I use it at night, without sunscreen, there’s no piling. I’m assuming that the two products don’t mix very well. It’s very frustrating because I love the product. Unfortunately, I probably won’t order it again.
Date published: 2019-05-31
Rated 5 out of 5 by from amazing! I recieved a free sample months ago. It was only enough for 2 or 3 uses, but I was really impressed with how my skin looked! This product is out of my price range, but I bought a full size bottle anyway. I'm getting nervous because its almost empty, but it did last for months and I LOVE it. I'm 45 years old and I feel that it helps me look 10 (or more?) years younger. My skin is smoother & fine lines have seemed to fade. If you're looking to splurge on an amazing skin product, this is a good choice.
Date published: 2019-04-19
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 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 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 Love it! It’s been 3 weeks since I started using this product am/pm. I should also mention that at the same time I introduced the Glycolic 10 at night to my regime as well. The clincher was a comparison photo that was taken at my dermatologist’s office 8 weeks ago. What an improvement! My skin is much firmer, feels smoother and no breakouts, no peeling. I can’t say whether it’s HA or the glycolic serum at night, but I won’t be without either one from here on in!
Date published: 2019-11-28
Rated 5 out of 5 by from Moist! After my 1st try on CE Ferulic, I have decided to try other product. I heard people are telling me that hyaluronic acid is a great thing to use on routine basis. Especially because my skin is on the dry side when traveling, I got HA to use at night before my mosturizer. I love it! It gives me dewy look when applied. Next morning, I notice my pores are smaller & very fine lines of mine disappear. I am hooked on another Skinceuticals product.
Date published: 2019-06-08
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 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 Helps smile lines This feels thick when you put it on but then melts in. There is no real small or tackiness after application. I think my fine lines are significantly better after using this for months and unless the winter is very dry mostly don’t feel the need for a moisturizer
Date published: 2019-06-09
Rated 1 out of 5 by from Cannot tell a difference Honestly, there are Skinceutical products that are amazing and some that I cannot tell a difference. My intention is not to discredit the product, I just cannot notice any changes in my skin after using the product.
Date published: 2019-11-25
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 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 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 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 Great for dry skin! I received a sample of this product from my salon and I fell in love! I have terribly dry and sensitive skin and this product has helped immensely!
Date published: 2019-06-24
Rated 1 out of 5 by from Not my favorite Skin Ceuticals serum I have used two other SkinCeuticals' serums, which I like very much. I purchased this one with high hopes, but it feels like sticky grape juice on my face. I find that I can't apply any other products over it and it feels like it is just sitting on my skin and not absorbing. I will not purchase this one again.
Date published: 2017-12-03
Rated 5 out of 5 by from Great Product I love love love this product it left my skin feeling smooth after a week. I have tried so many product to improve my skin texture and I couldn’t be happier
Date published: 2019-11-14
Rated 4 out of 5 by from Gave it a shot I like this product and feel like the firmness of my skin has improved. Disclaimer: I only use it once a day, not the recommended two times a day.
Date published: 2019-06-19
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 It works! I'm a 37 y.o. guy and only started taking care of my skin a few years ago when I started noticing evident signs of aging. I've always been suspicious about skincare products, but my dermatologist recommended H.A. intensifier together with a skincare regimen and I gave it a try. I can confidently say this product works. My skin looks less smoother and younger in general.
Date published: 2019-04-22
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