How to clean empty cosmetic bottles

1. Rinse the residue in the bottle with clean water first, and then use professional detergent or soap to clean and disinfect the inner layer of the bottle.
2. Be careful to use a cleaning brush to clean the corners at the bottom of the slender bottle, and use a cotton swab to clean the residue in the bottle mouth and bottle cap.
3. After cleaning, rinse it repeatedly with clean water, then dry it or air dry it, and avoid contact with dust and dirt.