Glans will have a white layer similar to gray, may be caused by poor hygiene, inflammatory secretions, drug factors. 1. poor hygiene: after suffering from glans, not often wash the head of the turtle, may continue to generate foreskin scale, may make the glans area there is white material. 2. Inflammatory secretion: due to the presence of infection in the glans, after the infection is aggravated, inflammatory substances may continue to appear, which may lead to the presence of a white layer of the glans and gray substances, and may also be accompanied by itching and tingling. 3. drug factors: for glans, may need to use some topical drugs for treatment, such as erythromycin ointment, clotrimazole ointment, etc., after applying the drug, may also make the glans there is a white layer of gray-like material. The glans will have a white layer of gray-like, they can not be clear causative factors, you should consult a doctor for examination and treatment, in the use of medication should also follow the doctor’s instructions, do not unauthorized use of medication.