How to patch test a new skincare product
Apply a small amount to a discreet area (behind the ear or along the jaw) once a day for a few days. If there is no redness, itching or stinging, start using it as directed, slowly. If your skin reacts, stop and rinse it off.
How to do it
- Choose a discreet area, such as behind the ear or along the jaw.
- Apply a small amount once a day for a few days.
- Check for redness, itching or stinging.
- No reaction? Start using the product as directed, slowly. A reaction? Stop and rinse it off.
Frequently asked questions
Do I need to patch test a BHA?
It is a sensible step with any new leave-on product.
What counts as a reaction?
Redness, itching, burning or swelling. Stop using the product; if it is severe or does not settle, speak to a pharmacist or GP.
The Glowness 2% BHA Serum (50 ml) is a leave-on exfoliant with 2% plant-derived salicylic acid, made for oily and combination skin*.
*Based on a 28-day dermatologist-assessed study of 20 women aged 18-35 when used as part of a skincare routine. Individual results may vary.
More guides
- The oily and combination skin routine
- How to use a 2% BHA exfoliant, and how often
- BHA for oily and combination skin
- Blackheads and visible pores: a simple routine
- How to choose a 2% BHA (salicylic acid) serum
- Glowness 2% BHA Serum: the full ingredient list
- Glowness 2% BHA Serum vs Paula's Choice 2% BHA Liquid Exfoliant
- Glowness 2% BHA Serum vs The Ordinary Salicylic Acid 2% Solution
- What can you mix with salicylic acid (BHA)?
