I always try the entire surface keep wet. The wrap should touch wet surface. Thin wrap should be used because is adhering to wet surface and helps same level of brightening all surfaces.
See example pictures for how I do brightening with thin food wrap. And some already brightened parts.
https://photos.app.goo.gl/gbng98mkERe1eoJp6
See example pictures for how I do brightening with thin food wrap. And some already brightened parts.
https://photos.app.goo.gl/gbng98mkERe1eoJp6
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