1There are 3 different types available, you can choose by your needs. 2AS1 suitable for normal skin, SA2 suitable for problematic skin, AO3 suitable for all skin types. 3AS1: Cleaning cutin, moisturizing, promoting skin peeling, gentle exfoliating, promoting collagen regeneration. 4SA2: Cleaning pore, antiseptic, calm skin, moisturizing, clear greasy. 5AO3: Nourishing and hydrating, repairing and regenerating, firming skin, smoothing skin.