The downside? Retinoids—especially retinaldehyde, the strongest around-the-counter retinoid that is found in this Peach & Lily serum—is kind of sensitizing, leading to dryness and discomfort. But this formula is legit great, because it works by using a compound referred to as ectoin to essentially "pause" the receptors in the skin https://anti-aging-formula89123.thelateblog.com/28803926/anti-aging-solution-an-overview