24KT Colloidal Gold has natural beautifying properties, while helping to improve the efficacy of other skin care ingredients. Dark spot corrector serum targets dark spots and sun-damaged skin, and acne scars. Contains great ingredients to help brighten and plump your skin. Propolis has natural healing properties to help protect your skin against pollution which can help with skin redness. Brightening serum can also help with dark spots and hyperpigmentation. For best results, use after facial cleanser and before face moisturizer.