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Alastin Skincare HA (Hyaluronic Acid) IMMERSE Serum 1 Oz

Sale price$134.00 USD
BUY 1, GET THE SECOND ITEM 15% OFF $113.90

Most hyaluronic acid serums put HA on your skin. This one does that, and then works on two things underneath: making more of your own, and stopping what you have from breaking down.

What is Alastin HA IMMERSE Serum?

Alastin HA IMMERSE Serum is a lightweight hyaluronic acid serum built on Octapeptide-45, which supports the skin's own production of high-molecular hyaluronic acid. Hexapeptide-11 helps prevent the enzymes that break HA down, and silver mushroom extract hydrates on contact. Applied one to two pumps, morning and evening, as the first step after cleansing.

What HA IMMERSE Serum does

Three ingredients, three jobs. Octapeptide-45 helps the skin naturally increase its own high-molecular hyaluronic acid production, which is the long-term half. Hexapeptide-11 helps prevent the production of enzymes that break HA down, so what the skin makes stays longer. Silver mushroom extract provides and encourages hydration now.

Make, preserve, hydrate. Most hyaluronic acid serums only do the third.

HA IMMERSE Serum specifications

Product type Hyaluronic acid serum
Key actives Octapeptide-45, Hexapeptide-11, silver mushroom extract, sodium hyaluronate crosspolymer
Targets Dehydrated skin, dry skin, dull skin, aging skin
Texture Lightweight and non-tacky, in Alastin's words
Formula Non-comedogenic, hypoallergenic
Size 1 Oz (29.6 mL)
Where it goes First step after cleansing, morning and evening

What Alastin's testing showed

98% of participants agreed their skin felt smooth immediately after applying. After four weeks, 91% agreed it replenished the moisture in their skin and 91% agreed it improved the overall appearance of their skin. Alastin publishes no participant count. The serum won Best Hyaluronic Acid Serum at the NewBeauty 2022 Beauty Awards, and an Oprah Daily 2022 O-ward for Best Hydrating Serum.

Alastin HA IMMERSE Serum reviews: what buyers report

  • A little goes a long way. Two of five reviewers say so unprompted, which matches the one to two pump dose. One describes using a small amount daily without her skin drying out.
  • It holds up on skin that is reacting to everything. One buyer describes it as the only HA serum that did not irritate her skin weeks after a laser treatment, when she was still very sensitive.
  • Practitioners send people here. One reviewer arrived on a recommendation from her provider, which matches how Alastin distributes.

Who HA IMMERSE Serum suits

Alastin lists the targets as dehydrated, dry, dull and aging skin. Dehydration is a water problem rather than an oil one, so it shows up on oily skin as readily as dry. It goes on before everything else, so it works under whatever you already use. If you are layering it around a treatment, INhance Post-Injection Serum is the short-course product in the range. Browse the full Alastin range for the rest.

Alastin Skincare HA (Hyaluronic Acid) IMMERSE Serum 1 Oz
Alastin Skincare HA (Hyaluronic Acid) IMMERSE Serum 1 Oz Sale price$134.00 USD

Customer Reviews

Overall rating: 4.2 / 5 from 143 reviews.

Customer photo review of Amorina Black Sandals

Very comfortable shoe, think I will wear it a lot this summer!

Amorina Black Sandals

Customer photo review of Jenny Navy Leather Loafer

Really nice shoes , well made , true as advertised. Very soft leather . They are a little narrow .

Jenny Navy Leather Loafer

The hat is too big Is there a smaller one I have an average size women’s head

Faux Fur Bucket Hat

The shoes just felt very flimsy and I needed more support. My toes felt like they would pop through the holes when walking.

Jelavu - Giselle Black Mules

My bag arrived in reasonable time - under 2 weeks from UK to USA - as expected. The bag is beautifully understated with soft leather, a lovely smooth strap that will not snag delicate knits but wide enough to feel comfortable on the shoulder even when carrying a heavy tablet and a smooth running zipper. It is carefully finished - no loose threads or crooked stitching and was exceedingly well packaged so there are no creases or scratches. The price was exceptionally good, especially as it included shipping and tax. I will recommend and consider buying from this site in the future.

Ecotorie - Dora Black Crossbody

These pants are great ! I have had a pair for 6 years and they are still great!

The Kate Skinny Cargo Pant

The pants are exactly what I wanted, fit perfectly and arrived quickly!

The Kate Skinny Cargo Pant

07/13/26 Seashell Handbag Hello, The bag itself is nice. However the ball of straw at the top makes it difficult to wrap the loop around it. The clasp needs to have a smooth surface or use a smooth metal clasp or a large faux pearl (like on other identical bags) or with a strong magnet or a clasp used on many top closure bags. I tried to push down the straw ball so it's easier to close. Tell your supplier about this issue.

Jelavu - Shelie Bamboo Crossbody Bag

The bag smells so horrible of toxic moth balls, I couldn’t even bring it in my house. My whole head hurt as soon as I opened it, and I had to wash my hands after touching it. It has been sitting outside for 24 hours and the smell is just as strong. I need a new one that doesn’t smell Iike this.

Jelavu - Sidney Black Medium Satchel Bag

These are well-made and very comfortable - was delighted when they arrived! The foot shape is very elegant (not too wide) which I think is not represented optimally in photo. More colors please!

Jelavu - Glimmr Dark Brown Sandal

Love this new bag. It has tons of room and a cute smaller bag inside. I love that it’s in neutral colors and compliments everything!

Ecotorie - Springhill - Tote Bag

These shoes were improperly size ranged. I am between a snug 6-1/2 and 7-ish depending on the shoe. I was too intimidated to order the smaller size seeing the 6– to 6-1/2 which 6 I am definitely not. So these 38’s are so huge I’ve inserted TWO inserts, and TWO Heel gels for each shoe and they are still hopelessly unwearable. I’m absolutely distraught. If you send me the smaller size I’m going to try to return these if you tell me how. Please send me the smaller pair.

Saint G - The Cosima - Black Pumps

I purchased it for my mother in law and liked it so much I I bought one for myself!

Jelavu Aspen Black Tote Bag