I purchased 4 different heat products to compare them: Sombra Warm Therapy, CryoDerm Heat, Prossage Heat and Soothing Touch Herbal Heat. Sombra won, hands down, for overall use. It warmed up quickly, has a nice scent, and kept the heat for a reasonable time.
CryoDerm came in a fast second. The heat held longer than Sombra, and felt deeper, but the scent tends more towards the mediciney side. I found it also heated up hours after I applied it when damp heat was applied to the area. I didn’t mind that effect, but was glad to know it could happen.
Prossage was my third choice. It held heat longer than Sombra, and was fairly comparable to CryoDerm, but the scent is horrible. I might use this on myself (just to avoid throwing product out), but not on my clients.
I had high hopes for Soothing Touch as it seems to rely more on essential oils than on camphor and menthol. It has a lovely scent, but the effects weren’t as deep or as long lasting as the other products. Also, it says on the bottle “a warming gel for pre-sports warm up”. Perhaps this would be perfect for sports massage, but I’m not sure it’s what I would use for deeper tissue issues.