The main ingredient of both Minoxidil Spray (Dosage) and Gel is Minoxidil, and both can be used for the treatment of hair loss, but the effect of the medication varies from person to person, and it is impossible to judge who has a better therapeutic effect. The main ingredient of the above two drugs are minoxidil, the difference is mainly the different dosage form. Theoretically, there is no significant difference in effect, but there are individual differences, it is not possible to judge whose therapeutic effect is better. Minoxidil belongs to the peripheral vasodilator, long-term topical use can stimulate hair growth in patients with male pattern baldness and pemphigus vulgaris, the exact mechanism is not clear. Minoxidil Spray and Minoxidil Gel are both indicated for the treatment of male pattern baldness and pemphigus vulgaris, and a common adverse reaction to both is mild dermatitis of the scalp. Both are limited to topical use on the scalp. Given that the indications for the use of the two drugs are basically the same, so for patients with alopecia areata, both have a certain therapeutic effect, due to individual variability, it is not possible to determine whose effect is better. The specific use of drugs should be carried out under the guidance of specialists, not unauthorized use of drugs.