Salicylic acid

Salicylic acid: The plant-derived BHA for smooth, healthy-looking skin

Salicylic acid is a beta-hydroxy acid (BHA) known for exfoliating the skin and deeply clearing pores.

How can salicylic acid help with acne and smoother skin?

Related to aspirin (1), it works by loosening the bonds between dead skin cells so they shed naturally.

Because it dissolves oil, it can reach into clogged areas to remove dirt and excess sebum. As an oil-soluble beta-hydroxy acid (BHA), it can penetrate the pores more effectively than water-soluble acids, making it a great option for treating and preventing acne breakouts.

It also has mild antibacterial properties (2).

Where salicylic acid comes from naturally

Salicylic acid occurs naturally in several plants, most notably in the bark of willow trees (Salix species). It is also found in some fruits, vegetables and herbs, such as tomatoes, blueberries and wintergreen leaves.

Historically, willow bark extracts were valued for their calming and purifying effects in herbal medicine.

Today, most skincare-grade salicylic acid is synthesised for purity and consistency, but it still offers the same exfoliating and pore-clearing benefits as its natural plant sources.

Other benefits of salicylic acid

Salicylic acid helps exfoliate the skin, making skin appear smoother. With regular use, it can help to resolve uneven texture and improve the look of fine lines. It can also even out tone, so the skin appears brighter (3).

At higher strengths, it can soften and lift thickened skin, helping to reduce calluses and warts over time (4).

Safety

Salicylic acid is generally well tolerated when used correctly. Some people may experience mild dryness or tingling, particularly at the beginning of use.

These effects usually settle as the skin adjusts. Starting with a lower strength and applying less frequently can help minimise irritation. It is best avoided on broken, inflamed or very sensitive skin.

Precautions

Before applying salicylic acid widely, it’s sensible to carry out a small patch test to check for any reaction.

Because it can make the skin more sensitive to sunlight, daily use of sunscreen is recommended during treatment and for a short period afterward.

Takeaways

Salicylic acid is a widely used skincare ingredient that is favoured for its many skin benefits, such as its ability to exfoliate, clarify and smooth the skin.

Naturally derived from willow bark and other plants, it offers effective pore-clearing and brightening benefits when used consistently over time. Plus, don't forget to use proper sun protection during use of salicylic acid.