There are several reasons for dark underarms. One of them is a condition called acanthosis nigricans which can occur on its own without any associated illnesses or can be associated with endocrine disorders, including diabetes. Sometimes a contact dermatitis from a deodorant, for example, can cause post-inflammatory hypopigmentation. Apply creams such as Hydroquinone 3 or 4%. If you can find these, you can apply them lightly to the dark armpit, and it may help, but it may take a month or two for you to notice a real difference. If you think you may have an underlying condition such as diabetes or another, you should be seen by a dermatologist.
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I would recommend you apply Kojiglo Forte cream (Kojic acid with Hydroquinone two percent) on the marks at night along with an application of a broad spectrum sunscreen on the entire face like Fa... Read full
.. reviewed clinical photographs attached it is acanthosis nigricans. Stop application of Retin- A cream it can lead to irritation in the intertriginous area. You may consider the application of Grazia up cream one daily but only in the armpit and no... Read full
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