What is BHA in skincare?
BHA stands for beta-hydroxy acid, and in skincare it almost always means salicylic acid. The defining difference from AHAs is solubility: BHA dissolves in oil, so it can move through sebum and exfoliate inside the pore rather than only on the surface.
It is also anti-inflammatory, which is why a blemish treated with BHA often looks less angry as well as less congested. Typical over-the-counter strengths are 0.5% to 2%.
What skin concerns does BHA treat?
Blackheads, whiteheads, congestion and mild to moderate acne respond best, because BHA clears the plug where it forms. It also smooths rough texture, helps keratosis pilaris and manages body and back breakouts.
Oily and combination skin see the most benefit, though even dry skin can use a low-strength BHA occasionally for congestion around the nose and chin.
What ingredients are best paired with BHA?
Niacinamide is the natural partner – it regulates oil and strengthens the barrier without competing. Hyaluronic acid, ceramides and glycerin replace the moisture exfoliation costs.
Azelaic acid and benzoyl peroxide complement it for acne, usually used at opposite ends of the day. Avoid stacking BHA with AHAs or retinoids in one step until your skin is used to it, and wear SPF daily. Take our Skin Quiz.
What is uneven skin tone?
Uneven skin tone describes a complexion that reads patchy rather than uniform – a mix of darker and lighter areas, lingering red or brown marks, blotchy cheeks, and a general loss of clarity.
It usually combines several things at once: hyperpigmentation from sun or inflammation, persistent redness, and surface build-up of dead cells that makes the whole face look mottled and dull.
What causes uneven skin tone?
Ultraviolet exposure is the dominant cause, stimulating melanin unevenly across the face. Post-inflammatory marks from acne, eczema or irritation add brown or red patches that can persist for months.
Hormonal pigmentation, slowed cell turnover with age, dehydration, pollution, smoking and a damaged barrier all compound it. Aggressive scrubbing or unsupervised strong actives frequently make tone more uneven, not less.
What ingredients are best for uneven skin tone?
Vitamin C and niacinamide are the reliable everyday choices – one protects and brightens, the other evens tone and strengthens the barrier. Azelaic acid is unusually useful because it addresses brown marks and redness at once.
Add gentle exfoliation with lactic or glycolic acid to clear surface build-up, retinol to accelerate turnover, and alpha arbutin or tranexamic acid for stubborn pigment. Daily broad-spectrum SPF is what makes the results stick. Take our Skin Quiz.
