Hyaluronic acid serum from Karin Herzog comes in two Swiss formulas: E&R Pro Booster, a collagen-boosting serum with vitamin C and hyaluronic acid, and Oxygen Hyalu Lift, a lightweight cream-serum that pairs hyaluronic acid with 1% active oxygen and vitamin A. Both help hydrate and plump the skin and soften the look of fine lines.

Which one is right for you? Choose E&R Pro Booster to help increase the skin’s water content and target the look of fine lines, wrinkles and loss of elasticity. Choose Oxygen Hyalu Lift for visible dehydration, plumping and firmness. Both suit dry, sensitive, oily, combination and mature skin, and The Golden Hour pairs them in one morning and night routine.

How do I use a hyaluronic acid serum?
Shake E&R Pro Booster well and apply it morning and/or evening to perfectly cleansed skin, alone or after your oxygen treatment. Apply Oxygen Hyalu Lift in a thin layer with a brush, without massaging. It contains hydrogen peroxide, so avoid the eyes, eyebrows and eyelashes.

Can I use it with my moisturiser?
Yes. Oxygen Hyalu Lift is designed to be layered under your Vita-A-Kombi or Vita-A-Apricot cream, and E&R Pro Booster is recommended with the Vita-A-Kombi range.

Not sure which suits you? Take our skin quiz.