Related by context. Frequent words. (Click for all words.) 76 UVB 72 UV radiation 70 ultraviolet rays 69 UV light 69 UVB rays 69 UV rays 69 sun ultraviolet rays 68 UVA rays 68 harmful UV rays 66 ultraviolet radiation 62 UV 62 harmful rays 62 ultraviolet light 61 UV exposure 59 ultraviolet 57 sun rays 56 melanin 56 sunlight 55 ultraviolet UV 54 irradiance 54 ultra violet light 54 riboflavin 53 rays 53 radiations 53 oxidants 53 infrared radiation 53 hyperpigmentation 53 infrared rays 52 Sunscreens 52 wavelengths 52 transmittance 52 sunscreens 52 sunrays 52 AGEs 52 UVB protection 51 reflectance 51 cosmic radiation 51 carotenoids 51 ceramide 51 HPV types 50 ionizing radiation 50 pre cancerous lesions 50 sebaceous glands 50 vitamin D3 50 cytotoxicity 50 retinoids 50 sunburn 50 cosmic rays 50 skin cancers 49 laser pulse 49 oxidative damage 49 benign lesions 49 vitamin D. 49 laser pulses 49 photosensitive 49 catechins 49 shorter wavelength 48 X ray beam 48 electromagnetic radiation 48 anthocyanin 48 radiative 48 carotenoid 48 reactive oxygen species 48 ionizing 48 reflectivity 48 hormone melatonin 48 photoreceptor 48 estrogen hormone 48 infrared wavelengths 48 squamous cell carcinomas 48 retinol 48 calcitriol 48 squamous cell 47 phosphors 47 X ray emission 47 THz 47 bactericidal 47 keratinocytes 47 melanocytes 47 ultra violet 47 HPV strains 47 fluoresce 47 epidermis 47 lm W 47 hydroxyl 47 photodynamic therapy 46 bladder cancers 46 zinc oxide 46 adenocarcinomas 46 photodiode 46 unshielded 46 lignans 46 anthocyanins 46 phenolic compounds 46 basal cell 46 EGCG 46 femtoseconds 46 radioactive decay 46 albedo 46 Terahertz 46 precancerous lesions