Why do I feel such a strong heat sensation when others feel nothing?
The heat sensation can vary dramatically depending on the person, due to the active ingredient the product contains and each individual's sensitivity to the stimulation of the skin's sensorial receptors.
If you experience a strong sensation of heat, don't worry, it'll disappear after a few minutes. Whatever you do, don't apply water, because that'll only re-activate the heating ingredient.
If the heat sensation is not strong enough, apply more of the product.