Cos De BAHA

Cos De BAHA is a South Korean skincare brand, founded in 2019, known for single-active serums at accessible prices. Each product is named after its key ingredient and concentration - like Niacinamide 10% or Azelaic Acid 10% - so you know exactly what you're using. Formulas are vegan, cruelty-free and free of fragrance and parabens.

Cos De BAHA keeps things minimal on purpose: simple, ingredient-led formulas and plain packaging, with the budget going into the active rather than marketing. That's how the brand offers high concentrations of ingredients like vitamin C, niacinamide and hyaluronic acid at prices well below most Western serums.

It depends on what you want your skin to look like. For a more even-looking tone, try the niacinamide, azelaic acid or vitamin C serums; for plumper, more hydrated skin, hyaluronic acid; for a smoother surface, the AHA or BHA exfoliants. Layer gradually and introduce one active at a time.

They can be, as long as you start slow. Because the actives are genuinely concentrated, it's best to introduce one serum at a time, use it a few times a week at first, and always follow with sunscreen by day. If you're unsure where to begin, our advisors can help you build a simple routine.