Keraon Eva Spray/Solution belongs to a class of drugs known as vasodilators. It is used to promote hair growth in men with male pattern baldness by improving blood flow to hair follicles, helping slow hair loss, and encouraging new hair growth when used regularly. Keraon Eva Spray/Solution should only be applied directly to the scalp area in the amount and in the way specified on the label or by your doctor. Clean and dry your scalp before using it. It may take approximately 2- 4 months to notice any hair growth. The first growth may be soft, colourless, and barely visible. Using more than recommended will not speed up hair growth and may increase the likelihood of side effects. This medication must be used continuously to maintain hair growth. Tell your doctor if your condition does not improve or worsen after using it for 4 to 6 months.The most common side effects of this medicine include itching, excessive hair growth, rash, and dermatitis. In case of accidental application in other areas, it may result in unwanted hair growth. Rinse thoroughly with plenty of water if you get it in your eyes, mouth, or broken skin. Talk to your doctor if you are bothered by the side effects or if they do not go away.People under 18 or over 65 should not usually use Keraon Eva Spray/Solution. It may also not be appropriate if your hair loss is due to medications (such as chemotherapy) or any nutritional deficiency. You should also not use this medicine if you have high blood pressure or use other creams or lotions to treat other scalp conditions. Talk to your doctor if you have heart disease or blood circulation problems.