Believe it or not, your razor can be one of the biggest sources of irritation, especially if you have dry skin or are using a dull blade. This leads to friction which can cause the skin to darken and thicken over time.
WHEN you shave also makes a big difference. Shaving often produces micro cuts on your skin. So, if you shave in the morning and then apply your deodorant or antiperspirant, you are applying a product to broken skin. Shaving at night gives your underarms time to heal and calm down, before applying product to the area.
Exfoliation, particularly with aggressive scrubs, can also lead to hyperpigmentation. If you have sensitive skin or are already prone to hyperpigmentation, throw out your loofah. If you exfoliate with harsh tools or scrubs, then it will only make the condition worse.
If you’re looking for a way to eliminate dead skin in the underarm area, use a charcoal deodorant or a charcoal mask. This will keep your pores from clogging, and will not cause irritation to the area.