Animal testing is a hot button issue with a multitude of opinions on each side. Itâs an industry where there are entire companies dedicated to the breeding of animals used for experimental purposes. You can order whatever sort of beagle, rat, pig or mouse (to mention a few) that your laboratory wants to test on.nimal testing is a hot button issue with a multitude of opinions on each side. Itâs an industry in which there are entire companies dedicated to the breeding of animals used for experimental purposes.
Hormonal imbalance is a common cause of black inner thighs to some women. You can easily tell that the cause is hormonal imbalance if they darken during some stages when there is a lot of hormonal changes such as during your monthly cycles, lactation or pregnancy.
What causes elbows, knees and certain areas of body skin to darken? One of the most common causes of darkened skin in these areas is contact or photocontact dermatitis. Contact dermatitis occurs when the skin is irritated by its contact with irritants or allergens. Photocontact dermatitis occurs when those irritants are stimulated by light (many allergens, such as fragrances, dyes and preservatives, are also photo-allergens, which can react with light to cause darkening).