Yes
Dark patches of skin on the neck may be acanthosis nigricans. This mostly happens in overweight adults that are pre-diabetes. This patch of dark skin indicates that your body is insulin resistant. These dark patches may also be hereditary. This is called hyperpigentation.
Concealer or powder.
The dark brown patches of skin around the genital area may be caused by various disorders. It is probably erythrasma which can be treated using anti-fungals and antibiotics.
lentigines are dark patches on the skin mostly found on the elderly, they are also moles and freckles
Dark scab-like patches in a cat's whiskers could be a sign of a skin condition such as feline acne, ringworm, or a bacterial infection. It's important to have a veterinarian examine your cat to determine the underlying cause and provide appropriate treatment.
i heard of this treatment that uses chemicals to burn off the top layers of skin, you have scabbing on your face for a day or two, but the new skin is supposed to look a lot fresher and more flawless
No, he still had patches of dark skin, he used makeup to cover it up.
It was very dark blue and purplish patches which was caused by subcutaneous bleeding under the skin
My Bichon Frise has always had those big dark patches on her skin underneath her fur. They're nothing to worry about. The vet said they are "freckles". Nothing causes them, they are completely normal. So no worries.
vaseline
A koalas skin is covered with fur. Koalas have a woolly light to dark grey fur with brown and white patches and a cream belly.