What is apple cider vinegar in skincare?
Apple cider vinegar is made by fermenting apple juice twice – first to alcohol, then to acetic acid. The result is a liquid of roughly 5 to 6% acetic acid with a pH around 2 to 3, plus trace malic acid and polyphenols.
Its skincare reputation rests on the idea that its acidity restores the skin’s acid mantle and that its antimicrobial action clears acne. Both claims sound reasonable; neither has held up well under testing.
What skin concerns does apple cider vinegar treat?
It is used as a toner, a spot treatment and a soak for eczema. The problem is concentration: undiluted ACV is roughly a hundred times more acidic than skin, and chemical burns from it are well documented in the dermatology literature.
The most direct test was unflattering. A clinical study found apple cider vinegar soaks did not improve skin barrier integrity in atopic dermatitis and caused irritation in most participants, and a companion study found they did not alter the skin bacterial microbiome either.
What ingredients are best paired with apple cider vinegar?
The practical answer is to keep it in the kitchen. If you insist on trying it, dilute heavily – one part vinegar to at least four parts water – patch test, keep it off broken or sensitive skin, and never leave it on overnight.
Everything it is reached for has a better-controlled alternative: lactic or glycolic acid for exfoliation and pH, salicylic acid or benzoyl peroxide for acne, and ceramides with niacinamide for barrier repair. Take our Skin Quiz.
What are clogged pores?
A clogged pore is a hair follicle blocked by a mix of sebum, dead skin cells and debris. Left open to the air the plug oxidises and darkens into a blackhead; sealed over by skin it becomes a whitehead or closed comedone.
Clogged pores are the starting point of nearly all acne – the microcomedone forms first, and inflammation follows only if bacteria and immune response get involved.
What causes clogged pores?
Excess sebum and abnormal keratinisation are the two mechanics. When the follicle lining sheds cells faster than they can clear, they bind with oil and form a plug.
Comedogenic products (heavy oils, some silicones and waxes), thick makeup worn for long stretches, humidity, sweat left on the skin, hormonal shifts and insufficient cleansing all contribute. So does over-cleansing, which damages the barrier and drives oil production up.
What ingredients are best for clogged pores?
Salicylic acid is the first choice because it is oil-soluble and works inside the pore rather than just on the surface. Glycolic and lactic acid clear the surface layer, and clay masks absorb excess oil weekly.
Retinoids are the most effective long-term fix, because they change how the follicle sheds in the first place. Add niacinamide to regulate sebum and keep the barrier intact, and switch to non-comedogenic, lightweight hydrators. Take our Skin Quiz to find products that will not re-clog you.
