What is yogurt in skincare?
Yogurt is milk fermented by live bacterial cultures, principally Lactobacillus and Streptococcus species. Applied to skin it brings three things: lactic acid produced during fermentation, milk fats and proteins, and the bacterial cultures themselves.
The lactic acid is the part with the clearest mechanism – it is a genuine alpha-hydroxy acid, though at concentrations far below a formulated exfoliant. The cultures connect it to the growing field of probiotics in dermatology.
What skin concerns does yogurt treat?
As a mask it exfoliates very gently, hydrates, and soothes redness and irritation – useful after sun exposure or on skin that cannot tolerate active products. The fats condition dry skin.
The probiotic angle is genuinely promising but still early: research on probiotic lactic acid bacteria and skin health points to effects on the microbiome, barrier function and inflammation, though most evidence comes from formulated products rather than a tub from the fridge.
What ingredients are best paired with yogurt?
In a DIY mask it is traditionally combined with honey, oatmeal or turmeric, all of which reinforce the soothing effect. Use plain, unsweetened yogurt – sugar and fruit add nothing and can irritate.
For reliable results, formulated lactic acid delivers the exfoliation at a known strength, and niacinamide with ceramides handles barrier and tone. Anyone with a dairy allergy should avoid it, and it should be rinsed rather than left on. Take our Skin Quiz.
What is bumpy skin?
Bumpy skin is a texture problem rather than a single condition. It covers the rough, uneven surface you can feel more than see – most often keratosis pilaris (small hard bumps on the upper arms, thighs and cheeks), closed comedones, milia, or simple build-up of dead cells on the surface.
Keratosis pilaris in particular affects a large share of the population and is harmless, but it makes skin feel like sandpaper and can be stubborn to smooth out.
What causes bumpy skin?
Most bumpy texture comes from keratin plugging the follicle. When dead cells fail to shed cleanly, they collect at the pore opening and form a firm bump – a process closely linked to a weakened permeability barrier and low skin hydration.
Genetics, dry skin, cold weather, eczema and a history of over-scrubbing all make it worse. Aggressive physical exfoliation tends to backfire, inflaming the follicle and thickening the plug.
What ingredients are best for bumpy skin?
Chemical exfoliation works far better than scrubbing. Salicylic acid clears inside the follicle, lactic and glycolic acid loosen surface build-up, and urea both exfoliates and hydrates.
Retinoids normalise how skin sheds over time, while ceramides, niacinamide and hyaluronic acid keep the barrier strong so the plugs stop reforming. Consistency matters more than strength here. Take our Skin Quiz to work out which exfoliant your skin can tolerate.
