Soak feet for 15 minutes with warm water; Do not hurt injury nail.Hook both sides of the ingrown toenail with the two hooks on the tool.Use one hand hold the middle fulcrum of the tool, twisting the nut to fix the tool on the toenail with the other hand.Take your feet out of the water after 30 minutes, wait for 15 minutes to make your feet dry;Remove the product, and readjust the toenails, you can fill some medical cotton under the slanted nails to prevent rebound.Specifications:Material: stainless steel, glass, PPKindly Tip : 1. Please be reminded that due lighting effects, monitor's brightness/contrast settings etc, there could be some slight differences in the colour tone of the website's photo and the actual item. 2. Item Measure by hand, it could be 1-3cm different, your kind understanding will be much appreciated.Help you cut and smoother nail edge or surface.