The product in question is a pleasant smelling emulsion that is easy to apply and quickly absorbed without being greasy. The warming effect begins shortly after application, but you should really rub the emulsion to the affected areas and not just rub the surface, so you can feel the heat effect in its entirety. This is depending on einzureibender point (eg at the back) a bit difficult unless you have no helping hand in the vicinity - so I forgive instead of 4.5 out of 5 stars.
The heat is noticeable and very pleasant and you get the feeling that the muscles thus relax a little without it would be unpleasant strong, as is often the case with pharmacies or prescription products. Skin irritation, I could not find even with my sensitive skin.
Strong buy recommendation for who needs or wants to do something good for yourself!