Algenist Promo Codes, Coupon Codes Algenist is a clinical skincare brand that harnesses the power of Microalgae to deliver innovative, anti-aging products. Scientists in San Francisco researching Microalgae as a source of renewable energy unexpectedly discovered that it secretes a compound, Alguronic Acid, that allows it to regenerate, even when exposed to harsh environments. Algenist then created a skincare line that is scientifically measured to provide anti-aging benefits when applied topically.