After testing many gels, I know safe whitening is a marathon, not a sprint. If...

https://direct-wiki.win/index.php/Why_Do_My_Teeth_Look_Dull_Even_After_Whitening_Gel%3F_A_Beauty_Editor%E2%80%99s_Honest_Take

After testing many gels, I know safe whitening is a marathon, not a sprint. If daily tea or coffee has dulled your smile, you need formulas that respect your enamel. I’ve spent weeks trialling kits to see what actually works without causing sensitivity