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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 365.
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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 Sample tried I enjoyed the sample. It did not burn my skin (I have super sensitive skin) which is a huge plus. I don't like sticky feel on hands but otherwise no complaints.
Date published: 2018-12-10
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 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 2 out of 5 by from No results so far I received a sample and used focused on a small part of my face because a fine line for almost 2 months, just to try.. no improvement noticed. I like this brand a lot and usually use many products from them, but this is not a problem-solving product. I gave 2 stars because my skin is sensitive and I didn’t have any problems about that.
Date published: 2018-11-25
Rated 5 out of 5 by from Amazing Been using this for two months and my face looks and feels amazing!!!! I’m 23 I have dry/sensitive skin and this product is making my face look healthy and feels so moisturize
Date published: 2018-11-08
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 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
Rated 5 out of 5 by from Only received a small sample but I was SO impresse I so wish I could afford this wonderful product. Just the small sample made my 59 year old skin look smoother and brighter.
Date published: 2018-10-13
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
Date published: 2018-09-05
Rated 5 out of 5 by from Amazing best skin treatment ever I'm so happy my skin hasn't looked this great for years
Date published: 2018-08-30
Rated 5 out of 5 by from I just love this serum Thos serum has made my skin feel firmer, softer, and much more hydrated than usual without any added oily-ness. It smells good, too! I use it nightly after my retin A.
Date published: 2018-07-17
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 Skin feels amazing! Added this product to my regimen based on reviews and boy am I happy! Skin feels softer, more supple, fine lines have lessened. Currently only using at night, but based on results will start using in the morning also!
Date published: 2018-05-27
Rated 5 out of 5 by from Great Product This has helped my aging skin immensely, fine lines are less noticeable and my skin looks great. I love this product.
Date published: 2018-04-20
Rated 1 out of 5 by from Not seeing any results Really not worth the money as I'm not seeing any results from this product. I won't be repurchasing.
Date published: 2018-04-13
Rated 5 out of 5 by from Silky skin This is my most recent Skinceutical product. I apply this serum after I wash my face and before my Renew Overnight Dry moisturizer. My face feels dramatically softer and more hydrated in the morning.
Date published: 2018-03-20
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 Perfect for my dry skin! As I said in the title !! I mixed this and made a “before bed” combo with then applying the triple lipid restore I would wake up with my skin feeling like I had a natural face plump. I loved the small free sample I got. I would def try it again and would recommend it to anyone looking for the perfect thorough hydrating regiment.
Date published: 2018-02-08
Rated 5 out of 5 by from Adore This Serum The serum is my FAVORITE. It leaves my skin so soft, and it holds moisture all day long, never drying out. I was nervous about applying before makeup, but my makeup stays put all day! I absolutely adore this serum, and will continue to use it in the future!
Date published: 2018-02-08
Rated 4 out of 5 by from Awesome! Loved trying this product out! It left my skin feeling great after use. I wish I had the full size bottle! Just a great all around staple for your skincare.
Date published: 2018-02-08
Rated 5 out of 5 by from Smoother Firmer Skin I enjoyed using this with the Triple Lipid Restore. My skin seemed smoother and tighter. I received this as a free sample. I more than likely will purchase again.
Date published: 2018-02-07
Rated 5 out of 5 by from Yes! Yes! Yes! This is my new favorite serum! I can't even begin to express my love for this product and how quickly it changed my skin. I have oily skin with dry patches and it's always a challenge to balance products to correct my skin issues. This serum is beautiful and my skin was basically like "Yes!" when I started using this. I visibly notice my skin is more even and the texture is basically gone. It feels smooth and moisturized without being oily or shiny. So happy!
Date published: 2018-02-07
Rated 5 out of 5 by from Absolutely loved! Really enjoyed this product! I used it before every makeup application and I noticed a difference right away. Am definitely going to re-purchase.
Date published: 2018-02-07
Rated 5 out of 5 by from Very firming! I loved this product! It is very hydrating and felt very luxurious on my skin. It also felt very firming even while I was applying it the first time! After a few uses I felt my face very tight and firm but also very moisturized. I loved using it before going to sleep and before applying my makeup and it worked out great.
Date published: 2018-02-06
Rated 5 out of 5 by from Yes, just yes! I received a sample of this for free and I was so excited because my dry skin could use all the hyaluronic acid possible. It sinks into the skin quickly which I love- this also makes me more inclined to use it in the morning prior to makeup application (who really has time during a busy morning to let all their product sink in)! This left my skin feeling soft and glowy.
Date published: 2018-02-05
Rated 5 out of 5 by from Healthy, bright and glowy In winter my skin tends to get super dry and rough and no amount of moisturizer can get rid of that stretchy, rough scaly feeling. And I am left with a super greasy, sticky face. I received a complimentary sample of this product . Only 3 drops of this product works on my entire face and it absolutely is magical. It relieves the stretchy feeling, and I just have to apply a tiny amount of moisturizer after that. Love it.
Date published: 2018-02-04
Rated 5 out of 5 by from LOVED THIS PRODUCT This made my skin look amazing. I absolutely love it. You can use this product and you will look like you instantly left the spa. Worth every penny!
Date published: 2018-02-04
Rated 2 out of 5 by from Didn’t see a difference I received this to test out with a few other products but I honestly don’t know what this one was supposed to achieve. I didn’t see any immediate difference. Perhaps you need to use it more often, so my review isn’t totally fair. That said, I’m required to write it. To write a legit review for skincare, you need at least a month’s supply.
Date published: 2018-02-04
Rated 5 out of 5 by from Super Supple Skin This serum is incredibly lightweight and easy to apply. It soaks right in as you’re applying! I received it complimentary from influenster and i must say I will definitely be purchasing this product. It made my skin feel supple and even in the first application. Love it! I received this product complimentary for review purposes.
Date published: 2018-02-02
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