Brett Favre knows the importance of manscaping ... because you never know when your nether regions will be seen by the world ... and that could be why he's now endorsing a line of body hair trimmers.
Favre is now the face of MicroTouch -- which sells various male grooming products.
In the new TV spot, a freshly clean-shaven Favre brags how "I got my groom back" ... and makes it clear his freshly shorn look is already a hit with the ladies.
No close ups of the body hair trimming ... but the insinuation is clear ... if your nude selfie somehow gets exposed to the world, you don't want it to look like 1972 down there.
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