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Avoid exfoliation (chemical, including retinols or exfoliating washes, and physical, such as a face brush like Clarisonic), protect your skin from sun exposure for at least 2 weeks, avoid irritating skincare products for at least 3-4 days (such as Vitamin C, Retinoids/Retinols, & Hydroquinone, etc.), and consider using a skincare regimen meant for moisturizing and replenishing post-laser skin

If your reconstitution results in 100mcg per 0.1ml (10 units), then knowing your desired dosage directly translates to a specific number of units on the syringe

Biophys Chem 280:106699

along with after care and what to expect