Is your skin imbalanced, prone to redness, irritation, reacts sensitively to external, mechanical or emotional influences, is extremely dry, also oily or is it problematic combination skin, which is therefore prone to impurities and the associated inflammation? With Mild Serum 21 you balance out these unrest states, bring the skin back into balance, soothe and strengthen its resistance. Ideally, you combine this with the Emulsion Regular Full-Time Care 21 for oily/combination skin, depending on your skin needs/care requirements. For dry, very sensitive skin, combine the Rich Full-Time Care 21 cream.