Quiz: skincare ingredients

Niacinamide is a form of vitamin B3. It supports the skin barrier, evens out tone and reduces the look of pores.

Vitamin C protects skin from free radicals and brightens the complexion, but it doesn't replace SPF.

Retinol and other retinoids are derivatives of vitamin A. They speed up skin renewal but can irritate sensitive skin.

Hyaluronic acid is a humectant: it attracts and holds water, so skin looks plumper and more hydrated. Despite the name, it's not an exfoliant.

Salicylic acid is a BHA. It's oil-soluble, so it gets into pores, which is why it's used for acne.

Glycolic acid is an AHA from sugar cane. Willow bark is linked to salicylic acid, milk to lactic acid and apples to malic acid.

Azelaic acid (e.g. Skinoren) is often prescribed for rosacea and acne. I use it in the morning.

Ceramides are natural lipids in the skin that hold the barrier together and prevent moisture loss.

Centella asiatica is tiger grass, a soothing ingredient also found in Erborian CC Red Correct.

Bakuchiol comes from the babchi plant and is often described as a gentler plant alternative to retinol.

Panthenol is provitamin B5. It hydrates and soothes, and it's in Babé mineral SPF too.

Zinc oxide (and titanium dioxide) are mineral filters. Avobenzone, octocrylene and homosalate are chemical.