The use of alcohol for soaking diseased nails is usually not recommended for patients with gray nails, which are mainly nail lesions on the hands or feet caused by fungal infections of the nails. Although alcohol has antiseptic properties, it does not inhibit or kill the fungus and has no therapeutic effect on gray nails. The use of alcohol for soaking gray nails may irritate the surrounding skin and induce contact dermatitis, leading to an aggravation of symptoms that is detrimental to the treatment and recovery of gray nails. When gray nails appear, patients should not blindly treat themselves, but need to go to the dermatology department of a regular hospital for relevant examinations. The doctor will choose the appropriate treatment method for the patient, taking into account the severity of the condition, and the patient needs to use the medication under the guidance of a professional physician. The preferred treatment drug is antifungal drugs, commonly used antifungal drugs such as terbinafine and itraconazole, etc. You can also choose topical treatment such as bifenazole solution or compound salicylic acid solution. In addition, laser treatment and photodynamic therapy can also be used. During the treatment period, patients with gray nails should try to keep the affected area dry and avoid eating spicy and irritating foods. After treatment, patients should follow up with the doctor.