The absence of blisters after freezing of common warts usually does not affect the effectiveness of the treatment and is normal. Warts are caused by human papillomavirus infection and appear as flat, grayish-white or light-brown papules with a dry, rough, uneven surface. Common warts can be removed by cryotherapy. The duration and pressure of the cryotherapy treatment depends on the size and depth of the damage, and it is normal for the treatment to be performed without blistering. If the treatment is unsuccessful, it can be repeated in 2-3 weeks. The most important thing is to avoid scratching and rubbing the wounds, and to keep the wounds clean and dry to avoid secondary infections.