5% Mandelic Serum is an alpha hydroxy acid serum that contains the chirally correct versions of both L-Mandelic Acid and L-Lactic Acid.  These key ingredients offer exfoliating properties and can help diminish the appearance of discoloration.  Niacinamide offers antioxidant support for the skin. 
This water-based serum is appropriate for all skin types when 8% Mandelic Serum cannot be tolerated.
Updated Instructions: Apply 1 pump all over a clean face or affected area.