What does BHA stand for?

Does BHA mean salicylic acid?

Usually, yes: salicylic acid is the most common ingredient sold as a BHA in skincare. Strictly speaking, its chemical structure makes it different from a true beta hydroxy acid, but BHA is the established cosmetic name used for it. For shopping purposes, look for salicylic acid in the ingredient list rather than relying only on the abbreviation. BHA is a category, not a complete routine, despite the amount of work assigned to three letters.23

What does BHA do for skin?

Salicylic acid dissolves in oil, allowing it to work inside pores and help remove sebum, the oil your skin produces. That makes it useful for oily skin and clogged pores, including blackheads and whiteheads. It also helps shed dead surface cells. This is chemical exfoliation: the ingredient does the work rather than a brush or abrasive particles. Exfoliation does not have to involve a scrub, so grit is not a qualification.124

What is the difference between BHA and AHA?

Salicylic acid is the more targeted choice when clogged pores are your main concern. An AHA such as lactic acid is an option for rough surface texture. Neither category means that stronger exfoliation is better: too much can remove the skin structures that help retain water and healthy fats.1

How do you use a BHA product?

1. 1Test the product on a small area before applying it over a larger area.
2. 2Follow that product's directions for application and frequency. Salicylic acid comes in washes, toners, serums and moisturizers, so the abbreviation alone does not tell you how to apply it.
3. 3Follow exfoliation with moisturizer to help counter dryness.
4. 4Use sunscreen with SPF 30 or higher every day.

Your exfoliation schedule depends on your skin and the product: more aggressive exfoliation generally needs less frequent use. Do not exceed the label's recommended applications. Facial acids take time to work and need consistent use; do not expect an immediate change or increase applications to hurry the process.134

Who should be careful with BHA?

Dry or sensitive skin needs a mild approach to exfoliation. Prescription retinoids, retinol and benzoyl peroxide can already make skin sensitive or cause peeling; adding exfoliation can worsen dryness or breakouts. Avoid strong exfoliation if you have darker skin or develop dark spots after skin injuries. Never exfoliate sunburned skin or open wounds. Avoid BHA cosmetics on infants and children. If a BHA product causes irritation or prolonged stinging, stop using it and consult a doctor.34

Is LHA another name for BHA?

LHA stands for lipohydroxy acid. It is a derivative of salicylic acid, not the same molecule. LHA penetrates skin more slowly and has exfoliating properties. If you are looking specifically for salicylic acid, an LHA label is not an interchangeable ingredient name.5