Many green synthesis methods are used for synthesizing the nanoparticles in order not to harm the human kind which makes use of it. Sunscreen is one of the vital products that play a vital role in the human life now-a-days. Sunscreens are generally prepared with titanium dioxide and zinc oxide nanoparticles due to its higher bandgap which helps to protect the skin from UVB and UVA rays respectively. These nanoparticles are chemically prepared as far as now in the case of sunscreen products. Titanium dioxide nanoparticle does not give full protection over UV-A spectrum when compared to Zinc oxide nanoparticle. So sunscreen manufacturers opt for ZnO nanoparticle to give better results. Our motivation is to prepare green synthesized ZnO nanoparticle to use it in the preparation of transparent sunscreen. Here we use Aloe barbadensis leaf extract for the synthesis of ZnO nanoparticle.