Kohl is an ancient eye cosmetic, traditionally made by grinding stibnite (Sb2S3). It is widely used in North Africa, in the field of valuation pits dates, the cosmetic product (kohl) prepare base date is an alternative source of stibnite. One of the most problem relating to kohl application to eyes being responsible for causing lead poisoning. The aim of The present study is to control the lack of toxic element (lead and cadmium) in khol to date and natural khol . Dates variety Deglet-Nour , Ghars (tamar), Tantbocht (Tikrmiste) and Boufaroua) were purchased from the local market and pits were removed from the fruit. Date-pits were Roasted in fire for dried and finally crushed to give a dark brown powder and stored until used for analysis. The presence of lead and cadmium in the brown powder of date pits and in natural kohl are controlled by using the technical of cyclic voltammetry. The results of the study shows that the powder of four variety of dates pits (Deglet-Nour , Ghars, Tantbocht and Boufaroua ) didn't present no toxic heavy metals as lead and cadmium. Also our results showed the absence of cadmium and lead in natural kohl. Finally, the study shows That kohl prepared a base date pits presents no toxic effects are expected to the eye similarly to the natural kohl, which presented the importance of recycling waste dates.