Acne scars are caused by tissue defects during healing of acne. They include red and black discoloration of skin and textural changes like depressed/atrophic scars and raised/hypertrophic scars.

The discolorations are usually due to blood vessel dilation or excess pigment deposition, which can sometimes be corrected over time by skin itself, though it can take years. Atrophy/hypertrophy cannot heal on their own as it needs tissue remodelling at a higher level.

Multiple creams are available in the market claiming to heal acne scars, but the conponents must be studied well to understand which of them can act on acne and acne scars, and to what extent.

Starting with mild non comedogenic skin care products- sunscreen, cleanser and moisturiser is recommended as the first step.
If you rely on creams, they treat active acne more than scars. Topical antibiotics like clindamycin, retinoids like adapalene and benzoyl peroxide acts on active acne and prevents scars from forming at all.

Red/black scars can be treated by creams containing anti inflammatory and lightening agents like salicylic acid, glycolic acid, azelaic acid and tretinoin. They reduce pigment and exfoliate skin. Deeper marks may need chemical peeling/laser toning along with creams.

Atrophic and hypertrophic scars don't respond well to creams. Retinoids can help with mild scars while silicone gels can reduce hypertrophy to some extent, but significant reduction requires procedures like laser and microneedling. Please consult a dermatologist to know the best treatment for the scars you have.