LHR lasers do not interfere with collagen production.The wavelength that lasers emit is not deep enough to damage the collagen in your skin.
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A picture here would have been really helpful, to be more specific in recommendations. Having said that, there are several simple essentials to successful laser hair removal. First , the skin type has to be determined correctly. caucasian skin types are usually types 1 to 3 and asian skintype...
It is always best to wait at least 7 days after laser hair removal before applying any topical acne medication. It is important to always perform a test application on the area. If it does not cause discomfort or irritation, then you may proceed. It is important to check with your technician...