I already use a retinoid/another acid. How do I introduce this safely?

Introducing salicylic acid when you already use retinoids or other exfoliating acids requires careful management to avoid over-exfoliation, which can compromise your skin barrier. The product's own guidance advises careful introduction if your skin already uses such actives. A sensible approach is to avoid combining them in the same routine. For example, use your retinoid at night and apply the salicylic acid solution only in the morning, or use them on alternating nights. Start by applying the salicylic acid just once or twice a week, on your designated 'off' nights from your other actives, and closely watch how your skin responds over the next 48 hours. If you notice increased stinging, redness, peeling, or dryness, reduce frequency or pause use. A small test on a limited area before full integration is highly recommended.