A short, organic hyaluronic serum for dehydrated, fragile skin
A-Derma Biology Hyalu 3-in-1 Serum is an organic serum for dehydrated, fragile and sensitive skin. Its 3-in-1 action moisturises, plumps and soothes thanks to hyaluronic acid (sodium hyaluronate), Rhealba oat plantlet juice and aloe vera. The formula is short, with only nine ingredients, and is free of fragrance. Skin feels hydrated for longer, looks plumper, and fine dehydration lines are less visible. It works as the first step after cleansing, under any moisturiser, and is non-comedogenic, so combination skin can use it too.
The texture
A fresh, clear gel texture that absorbs in seconds and leaves no sticky film, so a cream goes on easily right after. It works well around the neck too, and layers under sunscreen or make-up in the morning.
Who it suits
- Dehydrated skin that feels tight
- Fragile, sensitive skin that reacts to long ingredient lists
- Fine lines caused by dehydration
- People who prefer certified organic care
Worth knowing before you buy: This is a hydrating serum, not a rich treatment: dry skin still needs a moisturiser on top. It is fragrance-free and suits sensitive skin.
How long one bottle lasts
With a few drops morning and evening, the 30ml bottle lasts about six to eight weeks.
Complete the routine

Biology Light Cream
A light organic moisturiser to seal in the serum.
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Biology Micellar Water
Gentle organic cleansing before the serum.
Shop →Characteristics
- Texture: fresh gel serum
- Skin type: dehydrated, fragile and sensitive skin
- Skin concerns: dehydration, tightness, dehydration lines
- When to apply: morning and evening
- Main benefits: moisturises, plumps, soothes, certified organic, short formula
- Formulated without: fragrance
How to use
Apply a few drops morning and evening to clean, dry skin on the face and neck, massaging gently. Follow with your moisturiser. Avoid direct contact with the eyes.
Active ingredients
- Sodium hyaluronate: hyaluronic acid that holds water and plumps the skin
- Rhealba oat plantlet juice: soothes and protects fragile skin
- Aloe vera: moisturises and calms
- Dandelion root extract: plant extract that supports skin comfort
Ingredients
Water (Aqua) · Glycerin · Pentylene Glycol · Sodium Hyaluronate · Aloe Barbadensis Leaf Juice Powder · Avena Sativa (Oat) Flower/Leaf/Stem Juice · Caprylyl Glycol · Sodium Benzoate · Taraxacum Officinale (Dandelion) Rhizome/Root Extract
Formulations are updated by the manufacturer from time to time. Always check the packaging you receive.
Manufacturer information
Brand: Laboratoires Dermatologiques A-Derma
Address: Les Cauquillous, 81506 Lavaur Cedex, France
EAN: 3282770389333
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