Both alpha hydroxy acids and beta hydroxy acids (AHAs and BHAs) can help fade dark spots. They are different products, but they work in a similar way. Alpha hydroxy acids, such as lactic acid, glycolic acidAnd the mandelic acidIt helps lighten dark spots by simply exfoliating the skin, says Suarez. “They can be irritating, however, irritation can exacerbate some types [inflammation]Especially on deep skin tones.
If your skin is more sensitive to AHAs, consider opting for mandelic acids rather than glycolic or lactic acids. This ingredient is more gentle but still helps fade dark spots over time. In fact, a skincare regimen containing mandelic acid and vitamin C has been associated with A 73% improvement in the appearance of post-inflammatory hyperpigmentation and melasma.
beta hydroxy acids, such as salicylic acidIt is traditionally used to treat acne but can be used to lighten dark spots, especially those caused by post-inflammatory hyperpigmentation. “It does this by exfoliating the skin, but it does too Anti-inflammatorySuarez says. Because of its structure, it prefers oily areas, such as the T-zone. “