The card does not speak of combining the cream with acids and retinol and does not name the order of application in a multi-step routine. Method of use: apply twice a day (once before bed for a better effect) to the affected areas of the skin, massaging thoroughly until fully absorbed; for a result, daily use is recommended.
General information (not a manufacturer's instruction): acids and retinol can irritate the skin, so new products are introduced one at a time and the reaction is monitored; if in doubt, it is better to consult a dermatologist.