By following the correct aftercare, you can achieve longer-lasting henna results. We’ve compiled a list of our go-to aftercare tips, which should be followed for 24 to 48 hours post-treatment: Do not rub the treated area. Avoid heat treatments. Do not apply brow makeup. Avoid sunbathing and sun exposure. Avoid swimming, saunas, and sweating.  Do not exfoliate the brow area as this will cause the Henna to fade quicker. Exposure to the sun and UV lights for long periods will cause the henna to fade quicker. Apply Brow Code Brow Growth Oil daily to keep brows nourished and healthy. Do not apply Retin-A, AHA, or exfoliate around the brow area for 72 hours on either side of the treatment.