@haircubed: Hair Cubed - Instant Hair Fiber Thickener Spray Transform Your Hair Instantly with Hair Cubed The Next-Generation of Micro Hair Fibers With Waterproof Technology. Each can lasts 2–5 months on average and stays on until you shampoo. This long-lasting performance makes Hair Cubed one of the most cost-effective cosmetic thickening solutions available. Hair Cubed is a spray-on cosmetic product designed to improve the appearance of hair thickness. It blends with existing hair to create a fuller-looking result and is suitable for daily cosmetic use. The lightweight formula leaves no residue, no clumping, and provides a natural finish that stays in place throughout the day.