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The effect of oral applied silica on reduced hair quality with brittle and splitting hairs was investigated. Over a treatment period of 6 month 3 × 350 mg silica daily were applied on 79 volunteers. The primary parameter for the hair quality was the swelling behaviour of the hair after incubation with 2.5 m NaOH. Secondary parameters were the thickness of the hair and the clinically evaluation by the volunteers. The study could demonstrate an improvement of all parameters. The efficiency of systemically applied silica against reduced hair quality is proved.

Effekt der oralen Gabe von Kieselerde auf die Haarqualität