How Many Times Can You Reapply Deodorant? Derms Explain
Short answer? You can apply as often as you like—assuming the formula doesn’t irritate your skin.
To be clear: You can face irritation from both traditional and natural deodorant options; although, traditional sticks may include more alcohols and formaldehyde-releasing preservatives, which are common irritants. “While any ingredient can irritate the skin, the fewer ingredients someone is exposed to, the less risk there is of an allergic reaction,” board-certified dermatologist Lisa Airan, M.D., once told mbg. “Traditional deodorants contain more ingredients, which puts the patient at increased risk for skin irritation.”
Even if you discover a natural deodorant you adore, though, a couple of ingredients can still aggravate sensitive armpits: First, “Many natural deodorants rely on baking soda to absorb moisture and neutralize odor, but too much baking soda can cause skin irritation in some people,” notes board-certified dermatologist Hadley King, M.D., (baking soda has a basic pH, while your armpits are more acidic; combining them together can cause a reaction).