the presence of hair plays an important role in people s overall physical appearance and self - perception . as a result of increased life expectancy , the desire to look youthful plays a bigger role than ever.the use of medicinal plants is as old as mankind and the market will face many new products containing natural oils and herbs in coming years . in traditional iranian medicine , many plants and herbal formulations are reported for hair growth as well as the improvement in hair quality . the aim of this article is to introduce effective medicinal plants in traditional iranian medicine to prevent gray hair and advocate them as the new products . the present investigation is an overview study and has been codified by library search in the main sources of traditional iranian medicine . in traditional iranian medicine , three types of formulations are proposed to prevent gray hair , namely ( i ) treatment compounds , ( ii ) preventive compounds , and ( iii ) hair dyes to color gray hairs . our search showed that the main parts of a plant that is used in the treatment and preventive compounds are seeds and fruits . these are primarily in the form of topical oil or oral compound ( electuary ) . the majority of plant parts used in hair dyes is from the fruit and/or leaves . natural products are highly popular and the use of plant extracts in formulations is on the rise . this is because synthetic based product may cause health hazards with several side effects . considering the increased popularity of herbal drugs in hair care , it is worthwhile to conduct systemic investigation on the production and efficacy of these drugs . we trust that our investigation would encourage the use of traditional iranian medicine in future hair care products .
background : the presence of hair plays an important role in people s overall physical appearance and self - perception . as a result of increased life expectancy , 
 the desire to look youthful plays a bigger role than ever.the use of medicinal plants is as old as mankind and the market will face many new products containing natural oils and herbs in coming years . in traditional iranian medicine , many plants and herbal formulations are reported for hair growth as well as the improvement in hair quality . 
 the aim of this article is to introduce effective medicinal plants in traditional iranian medicine to prevent gray hair and advocate them as the new products.methods:the present investigation is an overview study and has been codified by library search in the main sources of traditional iranian medicine.results:in traditional iranian medicine , three types of formulations are proposed to prevent gray hair , namely ( i ) treatment compounds , ( ii ) preventive compounds , and ( iii ) hair dyes to color gray hairs . 
 our search showed that the main parts of a plant that is used in the treatment and preventive compounds are seeds and fruits . 
 these are primarily in the form of topical oil or oral compound ( electuary ) . 
 the majority of plant parts used in hair dyes is from the fruit and/or leaves.conclusion:natural products are highly popular and the use of plant extracts in formulations is on the rise . 
 this is because synthetic based product may cause health hazards with several side effects . considering the increased popularity of herbal drugs in hair care , it is worthwhile to conduct systemic investigation on the production and efficacy of these drugs . 
 we trust that our investigation would encourage the use of traditional iranian medicine in future hair care products .