Allergies to sulfonamides, also known as sulfa drugs, are common. Sulfa drugs were the first successful treatment against bacterial infections in the 1930s.Theyâre still used in antibiotics and other medications, like diuretics and anticonvulsants, today.llergies to sulfonamides, also known as sulfa drugs, are common. Sulfa drugs were the first successful treatment against bacterial infections in the 1930s.
According to Madrasi.com, henna that is black is not henna---it is indigo. If you use it, your hair will turn black. However, because indigo is a natural colorant, it can be teamed with henna, but the powder will be red, not black.
If you apply Henna on your hair regularly, just add 2 tbsp. of neem powder with Henna powder, 1 tbsp. of yogurt, lemon, black tea and 1 tbsp. of coffee. The Henna will help in moisturizing your hair while the neem will keep your scalp healthy (18).