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

Hyaluronic Acid Intensifier (H.A.) is rated 4.6 out of 5 by 503.
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A multi-functional corrective serum to help amplify skin's hyaluronic acid levels

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skin condition




In Stock

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 4 out of 5 by from Slow improvement but worth it I have roscea, sensitive skin and found that applying half of what every product suggests really helps in seeing how a product reacts to my skin. I found when I did this and using it only at night every other day in the beginning, my skin showed no reactions but it felt smoother after the first two weeks. I would recommend this product, just start off slow and in smaller amounts according to your skin needs.
Date published: 2020-11-09
Rated 4 out of 5 by from Soft & Smooth Absolutely love this product! After only a couple uses and only a few drops, I saw an amazing different in my skin!
Date published: 2020-11-08
Rated 4 out of 5 by from Smoother skin As I age, I am always on the lookout for a product to help my skin. I noticed an improvement in my skin texture and softness in just a short trial. Looking forward to getting a full size product to continue my routine.
Date published: 2020-11-08
Rated 5 out of 5 by from Works as advertised My face feels soft and smoother! Noticed a big difference after minimal use.
Date published: 2020-11-07
Rated 5 out of 5 by from face is super smooth Great addition to my skin care routine. Love how it feels going on. Saw huge improvement in texture of skin on my face.
Date published: 2020-11-04
Rated 1 out of 5 by from Skeptical I've been using this for three months and haven't noticed a change in the skin on my face. I have read a lot of good things about H.A. but it hasn't worked for me yet. I still have some left in the bottle so I'll finish it and see how it goes.
Date published: 2020-11-02
Rated 2 out of 5 by from Pricey for disappointing results Bought this item as it was recommended by my skin care provider. At first I loved the gel delivery but after using now for 3 weeks, I find my skin has become quite oily/shiny by mid day and the plumping hydration effects are truly short term .. like a few hours. There are many hydration serums available that offer better results and are much more reasonably priced. Disappointing.
Date published: 2020-11-02
Rated 5 out of 5 by from Noticeable Effects After using this product a few times, sparingly, I noticed an overall improvement in my skin's hydration.
Date published: 2020-10-27
Rated 5 out of 5 by from My face feels so soft and smooth I have been using this product twice a day and love it. My face feels so soft and smooth after I apply that sometimes I forget to moisturize afterwards. I am still waiting to see if my lines soften but I would be very surprised if they didn’t.
Date published: 2020-10-20
Rated 5 out of 5 by from Great Product I felt so good after applying it.....Really recommend to everyone..
Date published: 2020-10-20
Rated 5 out of 5 by from Nice! Got a free sample Of this very rich and creamy Cream! , a little goes a long way!
Date published: 2020-10-19
Rated 5 out of 5 by from Great product I have been using this product for a long time and I love it
Date published: 2020-10-15
Rated 5 out of 5 by from Love this product! I have been using this product for over 2 years, along with other Skinceuticals products, & love the way my face looks & feels!
Date published: 2020-10-05
Rated 5 out of 5 by from Perfect for my skin I’ve been using this product, together with CE Ferulic since March. My skin has improved immensely. It is smooth and glowing without causing unwanted oils. I have an oily T zone and this had always been a problem with other products. In my opinion, you can’t go wrong with Skinceuticals.
Date published: 2020-09-25
Rated 5 out of 5 by from Love Been using this serum for about two weeks. I use 1-2 times a day. My face feels very hydrated and helps with that extra glow. I would definitely buy again.
Date published: 2020-09-19
Rated 5 out of 5 by from Magic! Thai product Is excellent, it helps the skin to look softer and younger.
Date published: 2020-09-16
Rated 5 out of 5 by from I love the product! I received this as a gift. I love the way it help start getting wrinkles out of my face.
Date published: 2020-09-14
Rated 5 out of 5 by from Awesome product! I am trying to think of the descriptive words to use for this product, however, the only way I can describe it as my face neck skin just looks much healthier!
Date published: 2020-09-14
Rated 5 out of 5 by from Amazing easy to use very dependable This is a amazing product noticable results very easy to use and makes your skin feel amazing very happy with this product
Date published: 2020-09-12
Rated 5 out of 5 by from Instant holy grail!!!!! Honestly I have never liked a product so much. I see dramatic results in my skin. One thing that was pushing me away is the fragrance in here (orange peel oil) which has been shown in clinical studies to lead to allergies, but honestly this product smells like feint vinegar, so I am not worried about me developing an allergic reaction to it. I got it as a sample and my skin instantly loved it. It was so soothing yet hydrating and leaves no finish on my skin. My skin just completely soaks it up. Doesn’t leave that moisture feel on top of the skin at all which I have honestly not experienced with any other product. I use this at night and sometimes morning if my skin needs it. I will continue to buy this product for the rest of my life. It has 2% licorice which has been clinically shown to reduce redness and I have only been using this for a few days and already see results. Ive tried so many products this year and this is one I will always keep buying!! Thank you SkinCeuticals!
Date published: 2020-08-22
Rated 5 out of 5 by from Extremely effective This product does what it says! I’ve never used any other HA serum before but this one has made me wanna use this for the rest of my life! It spreads so beautifully and is light weight! Will definitely recommend it.
Date published: 2020-08-10
Rated 5 out of 5 by from Plump skin This is seriously magic in a bottle. I tend to break out from oils but my skin needs extra hydration. This is the most concentrated hyaluronic acid I’ve ever used and 100% tell a positive change in my skin. This product will always be in my skincare routine!
Date published: 2020-08-08
Rated 5 out of 5 by from Skin feels so much better I have tried different samples and it always made my face feel so much better and moisturized.
Date published: 2020-07-24
Rated 5 out of 5 by from Happy go Lucky with this product I have added another SkinCeutical to my daily facial routine. I am happy with the results I am getting. Now I have the Vitamin C, H.A. Intensifier, A.G.E. Interrupter, all products are delivering results. Thanks to my skin care providers.
Date published: 2020-07-18
Rated 1 out of 5 by from Has Done Nothing I've had both good and bad experiences with Skinceuticals products. I normally use the hydrating B gel for my super-dry hyperpigmented skin and it's always worked well for me so thought I'd give this a shot since it's labeled an "intensifier". I've used it just about everyday for the past month and have seen absolutely no difference. I wouldn't recommend this product even if it were cheaper because it hasn't made a difference to my skin, and the bottle is almost empty after a month or so of use.
Date published: 2020-07-16
Rated 5 out of 5 by from My face loves it! I received a sample of this product and I absolutely love it. I read the descriptions and instructions but needed to try to for myself. I started using it about 4 or so days ago and already see an improvement.I need to order this once the sample is gone.
Date published: 2020-07-05
Rated 5 out of 5 by from Great Moisturizer I noticed a difference with one day of use. It absorbs well and doesn’t sit on the skin. My skin was smoother and felt calmer - normally I have dry skin, it gets tight and feels dry/flaky. This work well under make-up and with cream moisturizer at night. One bottle lasts about a month, with use twice daily to face, neck, and chest.
Date published: 2020-06-25
Rated 5 out of 5 by from Proven results but not overnight I received my first bottle as a sample and once I ran out I immediately felt the need to purchase. This serum works. I’m not the type to write reviews but I am the type to read reviews before I purchase so I thought it was important to give my feedback on this product. The serum leaves my skin feeling soft and hydrated. Most importantly I saw results within a month or so. And continue to see them. My lines are finer and sun/age spots have diminished. I use this product every night and every morning. Definitely a must to add to your skin care routine.
Date published: 2020-06-23
Rated 5 out of 5 by from more thorough directions needed I bought the HA Intesifier due to the great reviews. I was hoping for more detailed directions in the box. I've recently adopted a lot of SkinCeuticals line. I have the HA Intensifier, the Triple lipid restore 2:4:2, Retexturing Activator and the Sheer Physical UV Defense. What order and how many times a day should I apply these products?
Date published: 2020-06-09
Rated 1 out of 5 by from Alcohol Dent. This is drying. Will be returning.Surprised to see this as in ingredient. I also don't like products which are loosely marketed for all skin types. My feeling is that my dry complexion would use different products from that of someone with an Oily complexion.
Date published: 2020-06-08
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