What is the difference between a good and bad scar?

Some people produce better scars than others, for example ‘poor scars’ such as hypertrophic or keloid scars stay visible and cause skin irritation for a number of months or years after formation. When these ‘visible’ scars fade they tend to whiten and remain equally visible – unlike a ‘good scar’ which will fade significantly and blend with the tone of the surrounding skin.

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