How to use them
Use them in the same routine at night. Apply Glycolic Acid first, then Sulfur, moving from thinnest to thickest texture.
- 1CleanseGentle cleanser, pat dry
- 2Glycolic Acid5% – 10%, wait about 1 minute
- 3Sulfur3% – 10%
- 4Moisturiserseal everything in
What Glycolic Acid does
The smallest alpha-hydroxy acid, so it penetrates deepest. It dissolves the bonds between dead skin cells for smoother, brighter skin and fades marks, but it is the AHA most likely to sting.
- Typical strength
- 5% – 10%
- When
- PM
- Irritation
- Best for
- Normal, Oily And Combination skin
Everything that pairs with Glycolic Acid →
What Sulfur does
An old-school acne fighter that dries out oily spots, gently exfoliates and has antibacterial and antifungal activity. It is gentler than benzoyl peroxide for many people, though it has a distinctive smell.
- Typical strength
- 3% – 10%
- When
- AM/PM
- Irritation
- Best for
- Oily, Combination And Sensitive skin
Everything that pairs with Sulfur →
Frequently asked questions
Can I use Glycolic Acid and Sulfur together?
Yes, it is safe. There is no known chemical conflict between Glycolic Acid and Sulfur, and neither makes the other less effective.
Which goes first, Glycolic Acid or Sulfur?
Apply Glycolic Acid first, then Sulfur. The general rule is thinnest to thickest texture, and lowest pH first.
Should I use Glycolic Acid in the morning or at night?
Glycolic Acid: best at night. Use 2–3 nights a week after cleansing. Skip it on nights you use retinoids. Sunscreen is non-negotiable because AHAs raise sun sensitivity.
Should I use Sulfur in the morning or at night?
Sulfur: works morning or night. Use as a spot treatment, a clay mask or a short-contact wash. It can be drying, so moisturise afterwards.
Is Glycolic Acid with Sulfur safe during pregnancy?
Neither is a known risk in normal cosmetic amounts, but guidance varies for Sulfur. Check with your doctor.