Post-acne hyperpigmentation can be relieved through general care, topical medications, and medical aesthetic treatments. 1. General care: Some of the hyperpigmentation can be relieved by itself in 1~3 months after acne, and it is necessary to use gentle cleansing, medical skin care products to help maintain the skin barrier, and pay attention to sun protection in daily life. 2. Topical medication: Vitamin A cream, azelaic acid, hydroquinone cream, etc. can be used topically to help accelerate epidermal cell renewal and inhibit melanocyte production. 3. Medical aesthetic treatment: For long-term hyperpigmentation, fractional laser, micro-needling and other medical aesthetic treatments can be used to promote the metabolism of pigment. Post-acne hyperpigmentation suggests timely consultation and targeted treatment under the guidance of a doctor to avoid delays. The above medications should be used in accordance with medical advice.