It’s recommended to limit caffeine, alcohol and smoking for about 24 hours before your PRP treatment. Caffeine can increase sensitivity, jitteriness or scalp discomfort during injections. Alcohol acts as a blood thinner and may increase the risk of bruising or prolonged bleeding. Smoking restricts blood flow due to the effect of nicotine on blood vessels, which may reduce oxygen delivery to the scalp and hinder your healing and overall PRP results. Since PRP relies heavily on the body’s natural healing response and blood circulation, reducing these habits helps improve platelet activity and enhances the effectiveness of the treatment. Keeping your body well-rested, hydrated and free from these stimulants allows your scalp to respond more favourably to the growth factors in your PRP.