Key takeaways
- Don't layer strong acids and copper peptides in the same step.
- Use acids on specific nights and skip DOSE that night.
- If skin feels tight or stingy, pause acids first.
Why separate them
Exfoliating acids work at a low pH. Copper peptides perform best in a gentler environment, and layering them together can also raise the chance of irritation. Keeping them apart is the simple, safe approach.
A weekly schedule
| Day | Morning | Night |
|---|---|---|
| Most days | DOSE + SPF | DOSE |
| 2–3 nights a week | DOSE + SPF | Acid (no DOSE) |
Which acids are which
- AHAs (glycolic, lactic, mandelic): surface smoothness and glow. See copper peptides vs glycolic acid.
- BHA (salicylic): oil-soluble, popular for the look of pores and congestion.
- PHAs (gluconolactone): gentler surface exfoliation.
Signs you're overdoing it
Pause acids and focus on DOSE, a gentle cleanser and moisturiser. See signs of a damaged skin barrier.
- Tightness, shine that looks 'plastic', stinging with gentle products.
- Flaking or new redness.
FAQ
Can I use salicylic acid and copper peptides?
Yes, on different nights or at different times of day.
Can I use an acid toner in the morning and DOSE at night?
Yes, separating them by time of day works well.
Do copper peptides exfoliate?
No. They support firmness and renewal without exfoliating, which is why they pair well with an occasional acid.
This article is for general information only and isn't medical advice. DOSE is a cosmetic product and is not intended to diagnose, treat, cure or prevent any disease. Individual results vary.