Know what you're putting on your face

Yes — always. Skipping moisturiser on oily skin can trigger more oil production to compensate. Choose a lightweight, oil-free gel moisturiser with niacinamide or hyaluronic acid rather than a heavy cream. Proper hydration actually helps regulate sebum over time.

Yes — they work well together. An older concern about niacinamide converting retinol into niacin (causing flushing) has been debunked at the concentrations found in skincare products. Niacinamide can even soothe the irritation that comes with starting retinol. Apply retinol first, let it absorb, then niacinamide.

Yes, even indoors. UVA rays that cause premature ageing and hyperpigmentation pass straight through glass windows. Consistent daily SPF is the single most impactful long-term step for your skin, more so than any serum. Use SPF 30+, broad-spectrum, as the final step of your morning routine.

The golden rule: thinnest to thickest texture. Morning: cleanser, toner or essence, serum, eye cream, moisturiser, SPF. Night: cleanser, exfoliant (2-3x weekly), treatment serum, moisturiser. Wait 30-60 seconds between steps. SPF always goes last in the morning, never under moisturiser.

Patience is the most important skincare ingredient. Hydration improves within days. Barrier repair takes 2-4 weeks. Acne reduction with salicylic acid or niacinamide takes 4-8 weeks. Pigmentation fading and retinol benefits take 12+ weeks. Introduce one new product at a time and stay consistent for at least 28 days before judging results.

No — more steps don't mean better results. The K-beauty philosophy is about layering light hydration, not using every step daily. A well-chosen 3-5 step routine beats an inconsistent 10-step one. The non-negotiables are cleanser, moisturiser, and SPF in the morning — everything else depends on your specific concerns.