Osmosis Boost contains 0.2% retinaldehyde and collagen/elastin stimulating ingredients. Osmosis Boost is good for stubborn acne and enlarged pores and has double the amount of most active ingredients found in Renew. Exfoliated skin can be compromised so use Boost to heighten the results in treating stubborn lines, scars and significantly damaged skin. Osmosis Boost can be added to any serum daily or less often, utilizing the maximum doses of key remodeling ingredients and thereby enhancing the effects of other serums. Osmosis Boost can also be used individually and can be used for PHOTODAMAGE, ROSACEA, AGEING/DRY SKIN AND HYPERPIGMENTATION.