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Macules or “pseudo-scars”: are flat, red or reddish spots that are the final stage of most inflamed acne lesions. After an inflamed acne lesion flattens, a macule may remain to “mark the spot” for up to 6 months. When the macule eventually disappears, no trace of it will remain -unlike a scar.

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Acne Product
A skin product that just addresses the after effects of acne like blemishes, redness or swellings of skin and pores is not an effective product. The product should avoid appearance of acne in the first place.
Source: ezinearticles.com