La Roche-Posay Anthelios UVMune 400 Invisible Fluid SPF50+

This is the sunscreen we recommend most often, and reviews frequently credit it with winning over white-cast sceptics. The Invisible Fluid is designed to sink in within seconds to a near-undetectable finish that sits happily under moisturiser and makeup. Its headline is the Mexoryl 400 filter, which the manufacturer says absorbs ultra-long UVA (peaking around 385nm and covering up to ~400nm) that many older sunscreens miss, on top of standard broad-spectrum SPF50+ cover. It is oil-free and non-comedogenic, and La Roche-Posay says it suits all skin types including sensitive skin, though reviewers note the finish leans slightly matte-satin rather than dewy. It is fragranced, so if your skin is very reactive it is worth patch testing first. RRP hovers around £20 but it is frequently discounted, which softens the premium over supermarket options — the main reason it edges the cheaper Altruist for the top spot is the more consistently invisible finish, so if cost outweighs cosmetics, drop to the value pick below.