Main content
  1. Home
  2. Magazine
  3. Bioscience & Ingredients
  4. Everything you need to know about serums
All about serums


A serum is a formula of highly concentrated active ingredients. It has a lightweight texture so that it’s absorbed quickly and reaches the deepest layers of our skin where moisturizers are not able to reach.

  • Regenerative
  • Highly concentrated
  • Visibly transforms the skin

Biotherm's fundamental serum, as you well know, is Life Plankton Elixir, the first step in any skincare routine to slow down skin aging accelerated by external aggressions.

Thanks to the highest concentration of Life Plankton™ at 5%, the "healing dose", it renews your skin in just 8 days no matter your age or skin condition.

Skin quality is visibly improved, smoother, more even and radiant.

At its maximum concentration, it acts on 8 skin parameters:

  1. Sensitivity
  2. Hydration
  3. Pores
  4. Elasticity
  5. Wrinkles
  6. Pigmentation
  7. Sebum
  8. Imperfections

How do you apply it?

  • Apply 3 or 4 drops of Life Plankton Elixir to the palm of your hand.
  • Apply to the face with light touches on the cheeks, forehead, chin and neck.
  • Moisturize using the Rain gesture: make small strokes with the fingertips all over the face, from the forehead to the jawline. This stimulates the tissue to boost hydration in the deepest layers of the skin.
  • Regenerate with the "8" gesture: draw a figure of 8 on the cheeks, cheekbones, forehead and chin to stimulate skin renewal.

Want to know more? Here are a couple of tips for looking radiant:

  • Trick 1: Mix the serum and get a natural glow with your day cream.
  • Trick 2: Boost the Glow effect of your makeup by mixing a drop of your serum with your foundation.
Orientation message
For the best experience, please turn your device