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How much is needed on different parts of the body?

Posted on August 8, 2025
46

Picture: Pexels

Most of us know we should be wearing SPF daily, but knowing how much to apply is just as important as remembering to use it in the first place. And if you’re underdoing it, you’re likely not getting the level of protection your skin really needs.

Whether you’re spending the day outdoors or just walking to and from the car, daily sunscreen is non-negotiable. But the amount you use (and how often you reapply it) makes a huge difference to how well it works.

How much sunscreen to use for your face and neck

As a general rule, you’ll need around one teaspoon of sunscreen for your face and neck. If that’s hard to visualise, the “two finger” method is an easier guide: squeeze a line of SPF along the length of your index and middle finger, and apply that to your face, ears, and neck.

It’s important to include often-missed spots like the ears, hairline, around the eyes, and jawline. If you’re wearing make-up, you’ll need a light sunscreen mist or stick to reapply during the day without smudging your base.

How much sunscreen to use for your body

The same “two-finger” method can be applied to each major body part — think of your arms, legs, chest, and back as separate zones that each need a generous coating. Another useful tip is to apply enough sunscreen to ‘colour in’ every exposed area, then massage it in until fully absorbed.

If you want a specific measure, most experts agree that 6 to 8 tablespoons is about right for full-body coverage. Anything less than that, and you may not be getting the SPF protection listed on the bottle.

Why quantity matters

It’s surprisingly common for people to apply only a quarter of the sunscreen they actually need. This means that even a high-factor SPF 50 might only offer the protection of an SPF 15 — enough to cause sun damage over time, especially in the South African climate where UV levels tend to run high throughout the year.

The key takeaway? Sunscreen needs to be applied generously to be effective. A light layer won’t cut it, especially on high-risk areas like the face, shoulders and chest.

How often should you reapply?

Sunscreen isn’t something you can put on once and forget about. It naturally breaks down throughout the day — even more so if you’re sweating, swimming, or wiping your face.

The general rule is to reapply every two hours, or straight after swimming or sweating. Even water-resistant formulas need topping up. For long beach days, outdoor events or hikes, keep your sunscreen with you and reapply often. A mist or stick can make this easier on the go.

A final note on daily SPF

Even on cloudy days, UV rays can penetrate through glass and clouds. That’s why daily SPF isn’t just for holidays or summer months — it should be a year-round habit. Applying the right amount and reapplying it regularly is one of the simplest ways to protect your skin against premature ageing, sun damage and long-term health risks.

Written by Jade McGee

First published by Woman & Home

Also see: How to use rice water for skin care

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