1. Check the product: Confirm whether the Olay toner purchased is genuine and avoid using counterfeit products.
2. Understand ingredients: check the product ingredients list. Some toners may contain surfactants or other ingredients that can produce foam.
3. Usage: Pay attention to the strength and manner of tapping the toner. Excessive force or improper manner can sometimes lead to foam. If the problem persists, it is recommended to consult brand customer service or professional skincare professionals.