Unsightly brown pigmentation on the face can occur if the liver is sluggish and not working as it should. When the liver is not functioning properly, oestrogen in the system increases. This causes a substance named tyrosinase, an enzyme containing copper, to produce more melanin (skin pigmentation) and causes blemishes on the face or the entire body.
Blemishes and hyperpigmentation on face
Unsightly brown pigmentation on the face can occur if the liver is sluggish and not working as it should. When the liver is not functioning properly, oestrogen in the system increases. This causes a substance named tyrosinase, an enzyme containing copper, to produce more melanin (skin pigmentation) and causes blemishes on the face or the entire body.
Those are sun spots. Right side of face, eye area.
Or plainly, malnutrition from meth abuse.