Njengoko sonke sisazi, ulusu oluqinileyo, olunencasa, oluqinileyo luphawu lolusu oluhle.Nangona kunjalo, njengoko iminyaka ikhula, i-collagen emzimbeni iya kulahleka ngokukhawuleza, kwaye iya kukhawulezisa ilahleko kunye neminyaka, ibangela ukuba ulusu lulahlekelwe ngumswakama, i-sebum kunye nokuguga.Ukususela kwiminyaka eyi-25, i-collagen kwi-bo...
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