Black henna can contain many things except henna. It is likely to contain indigo or other more permanent dyes and it's not safe, it can cause allergic reactions in many cases. Normal henna leaves a brownish color. I'm not sure where you are or what your means are but home hair dyes are a much better alternative.
Prior to the availability of the pure levothyroxine, desiccated animal thyroid extract was the only treatment for hypothyroidism. Today, some individuals prefer dessicated thyroid extract as a more natural thyroid hormone.
Thyroid-stimulating hormone (TSH) is produced by the pituitary gland, a tiny organ located below the brain and behind the sinus cavities. TSH stimulates the thyroid gland to release the hormones thyroxine (T4) and triiodothyronine (T3) into the blood. These thyroid hormones help control the rate at which the body uses energy. This test measures the amount of TSH in the blood. TSH, along with its regulatory hormone thyrotropin releasing hormone (TRH), which comes from the hypothalamus, is part of the feedback system that the body uses to maintain stable amounts of thyroid hormones in the blood.