My boyfriend works out and has purple stretch marks?

Good morning, ma'am,

Stretch marks are secondary to muscle growth and skin stretching. When they appear they have the dark appearance that you described. However, with time they "lose" their color and look more like the surrounding skin. I suggest applying a fragrance-free moisturizer such as Base Glaxal, Aveeno, Cerave or other, once or twice a day.

I hope this was helpful, please feel free to ask any other questions you may have

Tom Samaha, pharmacist

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