Deep Moisture And Light Concentrate
AQUASOURCE DEEP SERUM is rated 4.2 out of 5 by 14.
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A glowing skin starts with deep hydration* Biotherm's exclusive Life Plankton™, rich in 35 nutrien ... Read full description



Deep Moisture And Light Concentrate

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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

A fresh melting serum with millions of beautifying rosy micro-pearls.

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

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.

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- ingredients : 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.



Get free shipping for any online order in the amount of $ 50 or more.

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Delivery delay

2 to 5 working days

1 to 4 working days

1 to 2 working days


$ 7.95

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Orders will be processed within 1 to 2 business days.

Orders will be shipped Monday through Friday, excluding Canadian holidays. Packages are delivered without signature upon delivery.


Some products are considered dangerous. These are all aerosols or products containing alcohol, such as perfumes, liquid cleansers, toners, etc. These products must be shipped as standard because of air transport restrictions and regulations. If you have selected some of these products in your cart, the standard shipping will be applied automatically to your order at the time of payment.


Unfortunately, we are not able to cancel orders or change them once they are placed on the site. However, you can refuse the package at the door. If the packaging remains intact, Canada Post should not charge the return of the package to the shipper. If your package has already been delivered, you can request to return the unopened box to the shipper at your local post office, free of charge. If the box has been opened and / or reconditioned, you will have to pay the shipping costs. Please note that we do not offer to refund these shipping charges in this case.

To return an order to the shipper, please send the product (s) in question, by Canada Post with the expedited parcel service, with signature, to the following address:

L'Oréal Canada return department

3500 Douglas-B.-Floreani Street, Door 31-32

Saint-Laurent, QC, H4S 2B9

The refund will be made on your credit card within 30 days. You will receive an email when the credit is issued

Rated 5 out of 5 by from Mon chouchou! Un de mes premiers produits de Biotherm, je crois que c'est un de ceux qui m'a fait tombé amoureuse de la marque! Une hydratation, une bonne odeur, des résultats incroyables: wow! C'est mon sérum chéri. Mon visage est hydraté et beaucoup plus lumineux!
Date published: 2018-01-22
Rated 2 out of 5 by from Expensive and Never Worked! I bought this at Shoppers Drug Mart hoping to see great results. I use this before my moisturizer evry night. Though the texture is great, the smell is very strong. Every time I wake up to new pimple and its not a small one, its huge and swollen!! I wanna love this product so I gave a rest and try again but it never happened!! Its worst giving me pimples like I never had before. Its upsetting since I heard so much good reviews about the brand itself.
Date published: 2017-06-23
Rated 5 out of 5 by from Deep Serum is the perfect product 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.
Date published: 2016-09-05
Rated 4 out of 5 by from Nice light texture 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.
Date published: 2016-08-15
Rated 5 out of 5 by from Excellente hydration Produit conçu pour vous si votre peau est très sèche ou déshydratée. J'avais la peau extrêmement déshydratée en profondeur et, avec ce produit, l'effet de "plumage" a disparu. Ce produit hydrate en profondeur ce qui veut dire que vous devez tout de même mettre une crème en surface dans les périodes les plus difficiles. À raison de 6/7 jours, ça fait un an que je l'ai et il m'en reste encore pour au moins 2 mois. Odeur de fraîcheur. Gel pour pénétration maximale. Cliente TRÈS satisfaite!
Date published: 2016-08-13
Rated 5 out of 5 by from Excellent pour peau sèche excellent pour une peau sèche. Je l utilise avant de mettre ma crème hydratante aquasource. Aucune odeur, aucune réaction, aucun corps gras, peau hydratée parfaitement. J adore ce produit. Comme je l utilise en combinaison je trouver par contre le prix un peu cher.
Date published: 2016-07-20
Rated 5 out of 5 by from Wonderful serum 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.
Date published: 2016-04-06
Rated 5 out of 5 by from Love this serum♥ This serum is absorbed more deeply than other serums. My skin stays moisturized longer. I really love it♥ Please don't discontinue this serum!!
Date published: 2014-08-15
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