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A glowing skin starts with deep hydration* Biotherm's exclusive Life Plankton™, rich in 35 nutrients, is proven to have unparalleled regenerative abilities on skin. Biotherm biologists have managed to concentrate it 3x more** and associate it with mannose, a patented hydrator, to create deep serum. This serum helps visibly improve skin quality and create light from within.

*superficial layers of the epidermis, instrumental test

**than in aquasource gel

Apply on the face in the morning and/or evening before your care.

Biotherm products contains no parabens, no fragrance allergens and are enriched with Life Plankton™, pure thermal plankton extract that contains 35 nutrients, proteins, vitamins, amino acids, glucids, lipids and trace elements that help revive the skin’s vital functions and which are essential to its health.

863275 30- aqua, bis-peg-18 methyl ether dimethyl silane, alcohol denat., glycerin, butylene glycol, peg-20, dime t h icone, mannose , methyl gluceth-20, propylene glycol, phenoxyethanol, hydrogenated lecithin, carbomer, caprylyl glycol, ammonium polyacryloyldimethyl taurate, disodium edta, sodium hyaluronate, sodium hydroxide, limonene, vitreoscilla ferment, benzyl salicylate, t-butyl alcohol, bht, linalool, benzyl alcohol, citral, tin oxide, parfum, [+/- ci 77891, mica, ci 42090, ci 19140], (f.i.l. c185826/1).

*Please be aware that ingredient lists may change or vary from time to time. Please refer to the ingredient list on the product package you receive for the most up to date list of ingredients.

  • Visible skin results:
  • deeply hydrated, more bouncy for 92% of women*
  • more luminous, full of life for 90% of women*
  • boost hydration routine efficacy for 80% of women**
  • *self-assessments, 79 asian women, 4 weeks.
  • **self-assessments, 41 asian women, single application with the 2 products (serum + aquasource gel) rather than with only aquasource gel, results immediately after application.
  • A fresh melting serum with millions of beautifying rosy micro-pearls.

    Customer Reviews

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    Top Customer Reviews

    Where reviews refer to foods or cosmetic products, results may vary from person to person. Customer reviews are and do not represent the views of The Hut Group.

    Absorbs quickly wonderful base for lotion and makeup

    5 stars out of a maximum of 5

    Pleasantly surprised by this serum. Absorbed quickly and did well beneath my makeup

    2013-07-04by Trishka

    Love this serum♥

    5 stars out of a maximum of 5

    This serum is absorbed more deeply than other serums. My skin stays moisturized longer. I really love it♥ Please don't discontinue this serum!!

    2014-08-15by calirex

    Love the way my skin felt after one application

    5 stars out of a maximum of 5

    I tried a sample and I love the way it made my skin feel soft and hydrated. I am hooked

    2013-06-03by ChrisA56

    Aquasource Deep Serum

    5 stars out of a maximum of 5

    I have loved this product for years. I wish they still had fhe Aquasource Nuit Hydrating Jelly as the two were so good for morning and night.

    2021-05-08by Longtime user**Verified Purchase**

    Wonderful serum

    5 stars out of a maximum of 5

    I love this serum. I use it daily under my makeup. I have normal to oily skin. It is light, absorbs quickly, makes my skin feel like silk and moisturizes throughout the day. Beautiful product. Completely recommend.

    2016-04-06by Cynthia17

    Love it

    5 stars out of a maximum of 5

    Absorbs deeply, a little dab will do you. Goes well under a Biotherm moisturizer. Great for wind burn.

    2023-12-17by Ms M**Verified Purchase**

    Good but expensive

    4 stars out of a maximum of 5

    Good but expensive. The price is a bit more than other product out there

    2023-12-03by Vicky Lee**Verified Purchase**

    Deep Serum is the perfect product

    5 stars out of a maximum of 5

    This product has a lovely, light texture that blends into the skin leaving no trace of greasiness. In a very dry climate like mine the Deep Serum is perfect for winter when more moisturizing is required. It's the perfect compliment to Aquasource Gel as the seasons change. Add the Micellar Water for cleansing and Aquasource Nuit for nighttime and you have the ideal basic skin care regimen.

    2016-09-05by Yukongirl62

    Nice light texture

    4 stars out of a maximum of 5

    I like the scent and texture of this product. Lighter than a cream but heavier than a gel this serum is the right in between for my combination skin. You can wear it alone or under your regular moisturizer.

    2016-08-15by Prissy

    Refreshing product

    4 stars out of a maximum of 5

    I tried a sample of this and decided to buy the full bottle. I suffer from dry skin and although it was soothing and moisturizing, I saw no difference then with the regular Aquasource I use. Nonetheless, great serum

    2013-05-30by Tania99