Important precautions:
This is an aggressive mask and is not suitable for sensitive skin, rosacea, or active acne. Lemon juice is highly photosensitizing; if you expose your skin to the sun with lemon residue, you may suffer severe chemical burns and permanent dark spots (phytophotodermatitis). For this reason, it should only be used at night, and you must wash your face thoroughly the next morning and always apply sunscreen.
Because baking soda disrupts the skin’s natural pH, limit this treatment to once every 15 days as an occasional deep-cleansing treatment, never as a daily routine.
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