The problem it's actually solving
Your scalp is skin. Obvious when you say it out loud, less obvious when you're slapping factor 50 on your arms and completely ignoring the strip of exposed skin running straight down the middle of your head. I learned this the hard way at a outdoor gig a few summers back. Bright line of sunburn right along my parting, tender for days. Felt like a proper muppet.
This Calypso spray is specifically designed for that spot. It comes in a 50ml bottle, small enough to chuck in a festival bum bag or a beach tote without thinking twice about it.
Does it actually work, though?
Honestly, for the price, yes. SPF50 is proper high protection, not some token gesture. The spray format means you can apply it without messing up your hair or getting cream all over your hands. It soaks in reasonably quickly and doesn't leave that thick white cast you get with some sunscreen sticks.
Reservation: 50ml goes faster than you'd expect if you're reapplying through a full day out. You might want two on Subscribe and Save.
Who this is for
People with thin hair, short hair, or centre partings will get the most out of this. Also anyone who wears their hair up a lot outdoors. If you've got a thick full head of hair with no visible parting, you probably don't need it.
At £2.25 on S&S, it's not exactly a gamble. Worst case you use it once and forget about it. Best case, your scalp stops taking the punishment it has been for years.