The Basic Rule: Thinnest To Thickest
Skincare layers by texture. After cleansing, apply the most water-like product first and the richest last, so nothing blocks what follows. A simple, safe sequence: cleanse → BHA (if using) → watery serums like vitamin C or niacinamide → heavier serums → moisturizer → SPF (morning). You do not need every step every day.
Morning vs Night: Split The Actives
The easiest way to avoid irritation is to spread strong actives across the day rather than stacking them all at once.
Morning: a lightweight vitamin C for antioxidant support, then moisturizer, then — always — SPF. Vitamin C plays well under sunscreen.
Night: your exfoliant or niacinamide, then moisturizer. Nighttime is when actives like BHA do their work without competing with SPF.
Where BHA Fits
Salicylic acid (BHA) works best at a low pH (about 3–4) and is applied to clean skin before richer steps. You do not need it daily — two to three nights a week is plenty for most people starting out. Ease in slowly; over-exfoliation is the single most common mistake with acids.
Can You Use Niacinamide With Vitamin C?
Yes. The old warning against combining them is largely outdated for modern, well-formulated products. If you are cautious or sensitive, simply put vitamin C in the morning and niacinamide at night — you get both benefits with zero guesswork.
The Common Mistakes
Stacking every active at once. Introduce one new product at a time so you can tell what your skin is reacting to. Over-exfoliating. More BHA is not better; irritation undoes the benefit. Skipping SPF. Vitamin C and exfoliants make daily sunscreen non-negotiable. Over-applying serums. A few drops on damp skin prevents pilling.
Decode The Products In Your Routine
We translate the ingredient deck on each of these actives in plain English.
FAQ
What order do you apply niacinamide, vitamin C, and BHA?
Apply thinnest to thickest on clean skin: BHA first (if using), then watery serums like vitamin C or niacinamide, then heavier serums, then moisturizer, then SPF in the morning. The simplest approach is vitamin C in the morning and BHA or niacinamide at night.
Can I use niacinamide and vitamin C together?
Yes. The old caution about combining them is largely outdated for modern formulas. If your skin is sensitive, split them: vitamin C in the morning, niacinamide at night. Both can be used daily.
How often should I use a BHA exfoliant?
For most people starting out, two to three nights a week is plenty. Salicylic acid works best at a low pH around 3 to 4. Ease in slowly, since over-exfoliation is the most common mistake and causes irritation that undoes the benefit.
Should niacinamide or BHA go first?
Apply BHA first on clean skin, let it absorb, then follow with niacinamide and richer steps. Many people simply use BHA on some nights and niacinamide on others to keep the routine gentle.