Flexall gels help increase patient compliance and enhance ultrasound cryotherapy T.E.N.S. and massage therapists Flexall is 7% menthol and Maximum Strength Flexall is 16% menthol Both are aloe vera gel formulas that provide fast long-lasting relief from arthritis backache bursitis tendonitis muscle strains and sprains bruises and cramps Gels absorb quickly and completely are greaseless non-staining and gentle on the skin