Dr. Ceuracle 5α Control Clearing Serum

The "5α" refers to 5-alpha reductase, an enzyme associated with sebum production; the serum's formula combines retinol and salicylic acid to help regulate oil in acne-prone, oily, and combination skin. The name signals its targeting of excess sebum as a root cause of breakouts.

Because the serum already contains retinol, layering it with additional retinol products increases the risk of irritation, especially for those new to retinoids. It is generally recommended to use it as your primary active in the evening and pair it with a gentle moisturizer.

The combination of retinol and salicylic acid makes the serum quite active, so many users apply it two to three times per week initially before increasing frequency. Those with sensitive or compromised skin should patch-test before incorporating it into a daily routine.

While retinol has well-documented anti-aging benefits, this serum is primarily formulated to target acne, reduce inflammation, and control excess oil in oily and combination skin. Its inclusion of salicylic acid makes it more acne-focused than a standalone anti-aging retinol product.