2 ounce bottles are perfect for testing and sampling. This is that hard to find UV Blacklight Reactive Readmission Ink for hand stamps, box marking, wall decorations, and other unique security applications. Available in Green, Yellow, and Pink. Each color sold seperately. Select color when adding to shopping cart. Clearly visible under black light. Not easily washed off like other brands, very difficult to remove with effort. Glows brightly under blacklight. Fluorescent blacklighs are recommended over LED or incandescent blacklights for best effect. Best viewed in dark or shaded area. Normal light (sunlight or white light) can make the effect less obvious to visually detect. Opticz Blacklight Reactive Inks are suited for use on skin, fabric and similar porous or textured surfaces. Fluorsecent inks work best with fluorescent uv lighting in the 365nm range. Green Normal Color: Faint Green UV Blacklight Activated color: Bright Green Yellow Normal Color: Semi-Visible Yellow UV Blacklight Activated color: Deep Yellow Pink Normal Color: Faint Pink UV Blacklight Activated color: Bright Pink Waterproof Simple to use – inks come ready made Won’t gum up – stamp pads stay cleaner longer Economical – small amounts of ink are used with stamp pads All inks are formulated to fluoresce brightly under longwave ultraviolet lamps Readmittance type inks are designed for use at amusement parks, social gatherings and sporting events Inks are non-toxic, fast-drying and non-transferable This ink can be used for textile marking, hand-stamping, and fabrics. 2 oz ounce bottle Alcohol base SHIPPING & DELIVERY NOTES: This item must be shipped via UPS Ground Service within the 48 contiguous United States only. No exceptions. Express shipping options are not available for this product.