<P> Routines are scored on a scale of 100, with points for artistic impression, execution, and difficulty . In group routines a group consists of 8 competitors for World Championships and FINA events, each missing participant brings penalty points to the team . A group can consist of a minimum of 4 competitors and a maximum of 10 (for Free Combination). </P> <P> When performing routines in competition and practice, competitors wear a rubber noseclip to keep water from entering their nose when submerged . Some swimmers wear ear - plugs to keep the water out of their ears . Hair is worn in a bun and flavorless gelatin, Knox, is applied to keep hair in place; a decorative headpiece is bobby - pinned to the bun . Occasionally, swimmers wear custom - made swimming caps in place of their hair in buns . </P> <P> Competitors wear custom swimsuits and headpieces, usually elaborately decorated with bright fabric and sequins to reflect the music to which they are swimming . The costume and music are not judged (but marks will be taken off if the headpiece falls off any swimmer while she is swimming the routine) but factor into the overall performance and "artistic impression ." </P> <P> Makeup is also worn in this sport, but FINA has recommended a more natural look . Motions have been made by FINA, as well as national aquatics officials to regulate and diminish the use of elaborate makeup . In Canada, eye makeup must be smaller than a circle made by the swimmers thumb and forefinger, and be used solely for "natural enhancement". </P>

What are the kinds of kicks in swimming