The differences between these three formulas include the following:
- Nurture: Contains 6% hydroquinone
- Erase and M+: Contain 12% hydroquinone
- M+: Contains 12% hydroquinone and tretinoin
As a note, M+ is considered to be our strongest formula as it contains tretinoin to help penetrate through skin pigmentation deeper. However, it can also cause more side effects, such as irritation, dryness, and sensitivity, especially for those without experience using this active ingredient.