<p>Other topical acne treatments should be used with caution during treatment with Tretinoin. Particular caution should be exercised when using preparation containing a peeling agent for example benzoyl peroxide. It is also possible to apply Tretinoin and benzoyl peroxide alternately. The suggested regimens are either Tretinoin in the morning and benzoyl peroxide in the evening or the preparations should be used on alternate days.</p>