Tighten Up Anal Shrink Cream for Men .5 ounce from Nasstoys of New York. For that super tight sensation. Glycerin based natural tightening agent for an extra gripping experience. Net weight: 0.5 ounce. Ingredients: Potassium Alum in a washable base of PEG-7 and PEG-75. Categories: Anal Toys, Lubricants, Anal Lubes, Lotions, Sprays, Creams. 2023.