White spots on the skin can have different causes, including vitiligo or fungal infections, so it is important to obtain an accurate diagnosis before starting any treatment. Clovate cream (a strong steroid) is sometimes used in vitiligo for small areas and short periods under a doctor's supervision, but it is not safe to use on your own because it can cause side effects like thinning of the skin and may worsen other conditions like fungal infections. Instead of self-treatment, it is best to consult a dermatologist who can identify the cause of the white spots and suggest the most appropriate and safe treatment for your condition.