Acid facial toners can be very helpful in treating various skin problems such as acne, hyperpigmentation, dull complexion and uneven texture. Such toners usually contain AHA (alpha hydroxy acids) or BHA (beta hydroxy acids).
AHA acids, such as glycolic and lactic acid, are effective in exfoliating the top layer of skin, stimulating cell renewal and improving skin texture and tone.
A BHA acid, such as salicylic acid, penetrates deep into pores to cleanse and reduce inflammation, making it ideal for oily and problem skin.
Tonics with acids help smooth the skin, make it more radiant and healthy-looking.