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Before treatment: 2 to 3 weeks before, avoid retinol, AHAs/BHAs, exfoliants, waxing, threading, hair removal, chemical peels, and strong treatments. One week before, avoid laser, IPL, injectables, and limit sun exposure or tanning. 24 to 48 hours before, avoid alcohol and caffeine, keep skincare simple and hydrating, and do not try new products. On the day, arrive with clean skin, preferably without makeup.