Why do I still need SPF in the winter?

It’s drummed into us to use SPF in the summer months to protect us from UVB damage (skin burn) that we don’t give it a thought for the rest of the year, however UVA damage is all year round. UVA attacks even through clouds, think of UVA as a greenhouse affect, your tomatoes still grow behind the glass without direct sunlight on its skin, UVA causes damage within our skin, breaking down cellular turnover including collagen and elastin, thus causing premature ageing, making acne and hyperpigmentation worse and the scary thing is we don’t even feel it happening.