No, you should not put lemon on your armpit overnight.
Why You Shouldn't Apply Lemon to Your Armpits Overnight
Lemon juice is highly acidic. Applying it to your sensitive underarm skin, especially overnight, can cause several problems:
- Irritation and Inflammation: The acidity of lemon can irritate and inflame the delicate skin under your arms, potentially leading to a sunburn-like rash. (Source)
- Burns: Prolonged exposure to lemon juice can cause skin burns. (Source)
- Increased Sensitivity: Underarm skin is particularly sensitive and susceptible to damage from acidic substances like lemon juice. (Source)
- Hyperpigmentation: Irritation from lemon juice can lead to post-inflammatory hyperpigmentation (PIH), worsening any existing skin darkening in your armpits. (Source)
While lemon juice can lighten skin, the risks associated with overnight application far outweigh any potential benefits. It's better to avoid using lemon juice on your underarms altogether, or if you must use it, limit the application to a short period (e.g., 30 minutes) and rinse thoroughly. (Source)
Several other natural remedies exist for underarm odor and lightening, such as aloe vera gel. (Source) Consider these safer alternatives before using lemon juice.
