How to choose tinted sunscreen shades for deep skin tones

Choose the colour and the protection separately

Tinted mineral sunscreens are less likely to leave a white cast than untinted mineral options, which is useful when sunscreen is not meant to be the most visible thing on your face. Give the sunscreen five to 10 minutes to settle and blend before judging the finish. Treat that as general application guidance, not a promise that every tint will match.3

Check three things separately: the tint's appearance, the sunscreen's UV protection, and its visible light protection. SPF mainly describes protection against UVB, the ultraviolet rays responsible for sunburn. Broad spectrum protection also covers UVA. A flattering tint and an SPF number answer different questions, even if the packaging would prefer one very efficient sales pitch.4

Why iron oxides matter for deep skin tones

Visible light is the part of light you can see, and sunlight is its main everyday source. It can cause persistent pigmentation, particularly in skin of colour. Tinted formulas containing iron oxides and pigmentary titanium dioxide provide visible light protection in addition to their UV filters. Conventional chemical UV filters provide negligible protection against visible light, so an untinted sunscreen and a pigmented sunscreen do not necessarily offer the same protection against darkening.5

Melasma causes darker patches when the cells that produce skin colour become more active. Visible light can worsen melasma, especially in darker skin tones. An iron oxide containing tinted sunscreen with SPF 30 or higher is particularly useful here. Sunscreen helps protect against further darkening; it is not a quick way to erase existing patches. Melasma can last for years, and persistent patches deserve a treatment discussion with a dermatologist.2

How to apply tinted sunscreen

1. 1Choose broad spectrum SPF 30 or higher with water resistance. For melasma or visible light protection, check for iron oxides too.
2. 2Apply sunscreen to all skin not covered by clothing, 15 minutes before going outside. Make sun protection a daily habit, including cloudy days.
3. 3Apply enough rather than spreading a small amount into a barely visible layer. The labelled SPF is tested at 2 milligrams per square centimetre of skin.
4. 4Reapply at least every two hours outdoors, and after swimming or sweating.
5. 5Use shade and protective clothing alongside sunscreen, including a wide brimmed hat. Sunscreen is one part of sun protection, not the whole arrangement.

Do not solve an unwanted tint by applying less sunscreen. Using too little can mean you do not get the protection represented by the SPF on the label. The practical choice is a finish you can wear at an adequate amount, rather than a colour that only looks right when most of the sunscreen stays in the tube.4

When to stop or get advice

If a product burns or stings, stop using it: irritation can darken dark spots. For melasma, choose gentle, fragrance free skin care. Have a dermatologist assess a spot that grows, bleeds or changes, or a sore that does not heal, rather than simply covering it with tint.12