Why do my armpits get a red burning chemical rash from natural baking soda deodorant?
1. Introduction Armpits develop a red, burning rash from natural baking soda deodorants because the high alkalinity of sodium bicarbonate aggressively disrupts the naturally acidic pH of the skin barrier. This chemical mismatch strips the protective acid mantle, causing severe irritant contact dermatitis, microscopic skin abrasions, and intense burning sensations in the delicate axillary tissue. … Read more