This rebalancing serum works to reduce the over-production of sebum, visibly refines the appearance of large pores, smooths uneven skin texture, and visibly fades unwanted dark spots. It also gives thirsty skin a mega-dose of moisture that will prevent it from feeling dry and looking dull. Niacinamide aka Vitamin B3: improves the appearance of hyperpigmentation, visibly strengthens skin barrier, can help reduce and balance oil production in the skin Glucosamine: visibly increases collagen production in skin enhances the moisture level of skin, effective at visibly increasing skin elasticity Panthenol aka Pro Vitamin B5: Improves the appearance of the skin, including dryness, roughness, scaling, and itching, Has anti-inflammatory properties, reduces Transepidermal water loss (TEWL). Allantoin: Effective at soothing and calming skin, helps to exfoliate dead skin cells, visibly moisturizes skin 1oz/30ml Bottle demensions: ht: 2.6” diameter: 1.45”