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ThesunandtheskinLvwenguoCelticconstitution:whenpeopleareexposedtostrongsunlightcountriessuchasAustralia,getskincancerveryreadily.Peoplewithdarklypigmentedskinveryrarelygetskincancer.therearesixskintypes•Type1—Nevertans,freckles.redhair,blueeyes•Type2—Tanswithdifficulty,lessfreckled•Type3—Tanseasily,darkhair,browneyes•Type4—Alwaystans•Type5—Brownskin(forexample,Indian)•Type6—Blackskin(forexample,African)UltravioletradiationTherearethreetypesofultravioletradiationUltravioletradiationeffect•sunburn•photosensitivityshorttermlongterm•skincancer•wrinkling•solarelastosis•solarkeratoses•seborrheicwartsAsensibleapproachwithemphasisonreasonableprecautions☻Mostmolesareentirelyharmless.☻Detectingthechangesinmolesorearlymelanoma☻Thenon-melanotic,epidermalcancers:basalcellandsquamouscellcarcinomasPreventionofsundamageandskincancerCoveringtheskinwithclothes.SunscreenswillgreatlyreducesunexposureforexposedpartsExposuretomiddaysun,particularlyintropicalorsubtropicallatitudes,shouldbeavoided.