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There are two types of UV radiation, UVB (causes cancer) and UVA (causes skin aging)
Since this is a looksmax sub we won't give a fuck about the former
From Duarte et al 2009
Direct your attention to table 2. Taking the type of glass with the lowest level of protection (smooth, ordinary at a thickness of 0.2cm), UVA is negligible 25cm away from the source. At 50cm, there was no detected UVA.
A quote from the study:
"...in the case of UVA radiation, the transmission would be insufficient to produce actinic damage, given that not only does the glass block a large proportion of the radiation but also small changes in the distance from the emission source significantly decrease the irradiation."
Verdict. You do not need to wear sunscreen unless you plan on sitting in front of a clear window without blinds for an extended period of time. Otherwise it is just a waste of product. This is true even if you use photosensitive actives such as retin a or ahas.
Since this is a looksmax sub we won't give a fuck about the former
From Duarte et al 2009
Direct your attention to table 2. Taking the type of glass with the lowest level of protection (smooth, ordinary at a thickness of 0.2cm), UVA is negligible 25cm away from the source. At 50cm, there was no detected UVA.
A quote from the study:
"...in the case of UVA radiation, the transmission would be insufficient to produce actinic damage, given that not only does the glass block a large proportion of the radiation but also small changes in the distance from the emission source significantly decrease the irradiation."
Verdict. You do not need to wear sunscreen unless you plan on sitting in front of a clear window without blinds for an extended period of time. Otherwise it is just a waste of product. This is true even if you use photosensitive actives such as retin a or ahas.