All substances that are considered photosensitizers are fluorescent ones: this mean that they are natural or chemical elements that after having absorbed some exciting radiation, are able to modify it and to cease newly it in the guise of one or more radiations characterized by major wavelength and minor frequence of the absorbed one previously [1,2]. Substances that are photosensitizers may be absorbed orally and/or topically and all of them may provoke, under the sun rays of whichever wavelength or frequence, the Andrija Kornhauser-Constantine Zervos' actinic prophiria. Amongst the oral photosensitizers one can number porphirins, hemocyanins (tetrapyrrolic molecules) retrievable in many crustaceans and/or shellfish. Amongst the photosensitizers that act assumed both orally or topically, it is possible to find phylloeritrines (contained in chlorophyll), furocoumarines (Coronilla glauca, Ficus carica, Phebalium argenteum, Zanthoxylum flavum), xanthotoxins (Angelica arhangelica. Amni majus, Fagara xanthoxyloides, Ruta chalepensis, Ruta montana), bergaptens (Apium graveolens, Citrus acida, Citrus bergamia, Heracleum gigantum, Ligusticum acutilobum, Pastinaca sativa,Petrosilum sativum, Pimpinella saxifrage), oxypeucedanines (Imperatoria ostruthium), quinolones (Chincona calisaya), antraquinones (rhubarb, aloe faerox, sena, cascara sagrada, frangula). Amongst the topical photosensitizers one may number all the forage containing hypericin, Phagopyrines (Polygonum fagopyron, Trifolium hybridum, Medicago sativa, Lupinus coeruleus) and this situation may occur when people love to lie on the grass during the Letter to the Editor