Serious Serum is a single product sold in select United States spas and salons. The company behind this product is Portland, Oregon-based Urban Waxx, LLC, and, as the name suggests, the serum is designed for use post-waxing to minimize redness, bumps, and ingrown hairs.
The water-based, fragrance-free liquidy serum contains a blend of 6% lactic acid, 3% glycolic acid, and 1% salicylic acid formulated at a pH that allows this combination of AHAs and BHA ingredients to function as exfoliants. The formula also contains antioxidant green tea and some good skin-identical ingredients to help reduce inflammation and preserve barrier integrity during the exfoliation process.
Combining AHAs and BHA in one product isn't necessary for effective exfoliation, but each has its unique traits that aren't bad to consider in combination. For example, the glycolic and lactic acids have water-binding properties that are helpful for all skin types, while the salicylic acid has potent anti-inflammatory and mild antibacterial actions that are great for acne-prone or easily reddened skin.
Although Serious Serum used to be an exfoliant we recommended, the most current formula contains peppermint oil, a skin irritant that now prevents us from recommending this product. Please see our list of Best Exfoliants for products that treat ingrown hairs and other skin issues without exposing your skin to irritants like peppermint oil.