Youth Booster should only be used in the evening, mixed with Recovery Serum in the palm of your hand for best results, or with your daily cream to intensify its effects.
For an even more intense result, apply a few drops of the booster directly to the skin before Recovery Serum or cream, allowing the booster to be completely absorbed into the skin (only if Retinol / Vitamin A products have been used prior).
The use of SPF-protected products during the day is essential.
Avoid contact with eyes. If irritation develops, discontinue use and consult a specialist / physician.