Skinceuticals Glycolic brightening renew overnight

Final price. Dropped from $60 Brand new sealed. Got as a gift and I can’t use it because I’m allergic to one of the ingredients. Retails over $100 SkinCeuticals Glycolic Brightening Renew Overnight Synergistically blended with phytic acid and a soothing complex, Glycolic Brightening Renew Overnight works at a true 4% glycolic concentration to dissolve cellular cohesions and promote turnover, revealing brighter, and more radiant skin. Not to be confused with the US-only 10% glycolic version. Small and Mighty Glycolic Acid at a Glance What is glycolic acid? Derived from sugar cane, glycolic acid is the smallest of the alpha-hydroxy acids (AHA) What makes it effective? It loosens and releases dead and dehydrated cells, increasing the rate of exfoliation to improve skin texture and tone, and fosters a natural glow. Not all glycolic treatments are created equal How Active is SkinCeutica's Acid? Free acid value refers to the true strength of your glycolic acid product. It is the active acid available to work on your skin and it depends on 2 factors: Concentration: 4-10% is the ideal concentration for nightly treatments pH: Lower pH formulas have a higher glycolic free acid value, increasing their strength and effectiveness. Quantifiable improvement in key markers of glow 18% improvement in Radiance 21% improvement in Skin Texture 10% Improvement in Skin Tone 21% improvement in Skin Clarity Protocol: An 8-week, single-center, clinical study was conducted on 50 females, ages 35-64, with global fine lines, uneven skin tone, rough skin texture, and a dull complexion. Glycolic Brightening Renew Overnight was used once nightly in conjunction with a sunscreen. Efficacy evaluations were conducted at baseline and at weeks 2, 4, and 8.

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