1. Sodium bicarbonate is mainly used as a softener, and it uses its swelling and fermentation effect to soften earwax that is not easy to take out.
2. Earwax is formed by secretions, which generally show an acidic reaction. Therefore, when sodium bicarbonate is used for eardrops, it will neutralize and soften, and then remove earwax. Usage: 1.Drop a few liquid in the external auditory canal 2.Waiting to soften the earwax 3.Use cotton swabs to pull out.