Clinically proven to reduce skin damage, this high-performance retinoid is THE star of the show. It helps to correct acne and sun damage. It works by repairing skin cell degradation, while it increases cell metabolism. Collagen production is also increased by this amazing serum. CAUTION: May increase sun sensitivity. For nighttime use only. Must wear broad spectrum SPF daily while using this product. There are three levels to the serum to accommodate your needs. LEVEL LITE SPA BOTTLE: Airless White Opaque Glossy Round Plastic RecyclableCap: FrostedLabel area for 1 ounce: 2.7 in. high x 3.4 n widePrice 1 oz: Box 32 units $1100, Bundle 8 units $288 MSRP 1 oz: $80 .5 oz: $65 LEVEL 1 SPA BOTTLE: Airless White Opaque Glossy Round Plastic RecyclableCap: FrostedLabel area for 1 ounce: 2.7 in. high x 3.4 n widePrice 1 oz: Box 32 units $1188, Bundle 8 units $304 MSRP 1 oz: $85 .5 oz: $65 LEVEL 2 SPA BOTTLE: Airless White Opaque Glossy Round Plastic RecyclableCap: FrostedLabel area for 1 ounce: 2.7 in. high x 3.4 n widePrice 1oz: Box 32 units $1249, Bundle 8 units $320 MSRP: 1 oz=$90 .5 oz=$70