The horse hair brush is designed for finishing off glide surfaces treated with powders in high suction conditions, when the desire is to get the maximum amount of separation between the ski base and the snow surface. The horse hair brush removes the shiny gloss from the glide surfaces and opens up stone ground bases considerably more finely than nylon brush. It improves the velocity of the skis in higher speeds but decreases their sensitivity in very low speeds. Horsehair is not recommended for finishing glide surfaces in normal below freezing conditions. Avoid brushing too much when working with fluor powders – although the brush feels soft it removes powder very quickly and thoroughly.