Voici comment protéger une tête chauve du soleil

Bald head sun protection

Dr Paul Banwell runs The Banwell Clinic¹ and is the previous head and founder of The Melanoma and Skin Cancer Unit (MASCU) in East Grinstead: "Without hair, your skin is directly exposed to the sun's harmful rays. The thin skin on the scalp can burn quickly and is one of the most common places I see for cancer de la peau. The most common types of skin cancer on the scalp are basal cell carcinoma (BCC) and squamous cell carcinoma (SCC)."

In fact, research finds that the sun’s harmful UV rays (ultraviolet light that naturally radiates from the sun) are the most important environmental risk factor for all skin cancers, as well as for premature skin ageing².

This is because UV rays can alter the DNA in your skin cells. Over time, this damage can cause these cells to start growing out of control, leading to the development of skin cancer.

Unsurprisingly, the best way to protect a bald head is to keep it out of the sun. Dr Bowes advises wearing a hat to protect your head while in the sun and wearing protective clothing and glasses to shield the rest of your body. She also recommends seeking shade when you can, especially mid-day when the sun's UV rays are strongest.

Planning ahead is always a good idea. Dr Bowes suggests keeping an eye on the weather forecast and checking for heatwave weather warnings over spring and summer.

Of course, it's not always possible or practical to avoid the sun completely. For example, you're unlikely to wear a hat while swimming (although you can buy sunhats for this purpose). This is where sunscreen comes in.

"Wearing sunscreen is vital in the prevention of skin cancer," says Dr Banwell. This is backed by many high-quality studies³.

Not all sunscreens are created equal. Dr Bowes describes the key things you need to look out for in your sunscreen:

• UVB: look for a sun protection factor (SPF) of at least 30 to protect against UVB (ultraviolet B radiation) which has high energy levels that can damage the outermost skin layers, causing un coup de soleil. SPFs are rated on a scale from 2 to 50+, with 50+ offering the highest UVB protection. The higher the SPF, the better the protection. 

• UVA: also look for at least a 4-star UVA (ultraviolet A radiation) protection rating, which is indicated by the letters 'UVA' in a circle. UVA has a longer wavelength than UVB and is associated with skin ageing. The star rating measures the amount of protection, and you should see a star rating of up to 5 stars on most UK sunscreens. Again, the higher the star rating, the better the protection. 

• Broad spectrum: sunscreens that offer both UVA and UVB protection are called broad spectrum. Aim for these, with a higher SPF and star rating. 

• Expiry date: make sure the sunscreen is not past its expiry date. Most sunscreens have a shelf life of 2 to 3 years.

When it comes to sunscreen for bald heads, Dr Banwell recommends using a product that specifically targets the face. "This will be less heavy and look less shiny on your scalp, which is what you want. Please don't forget your ears, forehead, and neck too.

"Ideally, use organic sunscreen, although I do appreciate it is more expensive and I would rather people were wearing any sunscreen than none at all."

Sunscreen can come in the form of sunscreen spray, gel, lotion, and cream. "This simply explains the consistency (or thickness) of the sunscreen," adds Dr Bowes.

If you have some head hair, you may find a scalp spray is the easiest option to use on the areas where your scalp is most visible. No matter the form you choose, Dr Bowes shares the essential sunscreen application must-dos:

• Amount: you should apply around two teaspoons of sunscreen to your head, arms, and neck. You should apply around two tablespoons if you're covering your entire body, while wearing a swimming costume. If applied too thinly, the amount of protection sunscreen gives is reduced. Therefore, apply sunscreen liberally and frequently to all exposed skin. 

• Fréquence: if you plan to be out in the sun long enough to risk burning, sunscreen needs to be applied twice - 30 minutes before going out as a baseline, and just before going out to extend the time of protection it gives. Reapply sunscreen every two hours, as the sun can also dry it off your skin. You should also reapply straight after you have been in any water (even if the sunscreen is water resistant) and after towel drying, sweating, or if anything may have rubbed the sunscreen off.

"You shouldn't just be using sunscreen on sunny days. It's important to continue to protect your scalp from UV damage throughout winter too."

According to Dr Bowes, you should avoid sun beds at all costs. Like the sun, sun beds give off skin cell-damaging UV rays. This UV radiation is high intensity, which is what gives you a rapid tan. Every time you use a sun bed, more damage is done, and your risk of visible skin ageing and skin cancer increases⁴.

If you crave tanned looking skin, Dr Bowes recommends opting for fake tan out of the bottle. This is by far the healthiest way to tan your skin as it doesn't involve any permanent skin cell damage.

Finally, you need to be able to recognise the warning signs of dangerous sun damage. If you develop skin cancer, detecting it early can significantly affect your chance of recovery.

According to the Skin Cancer Foundation, 99% of people with melanoma skin cancer survive at least five years from their diagnosis. This survival rate drops to 68% if the cancer reaches the lymph nodes (small clusters of immune system cells) and to just 30% if it reaches distant organs⁵.

You should keep an eye out for changes in the appearance of your moles all over your body. "Check your moles regularly and consult your doctor if you're concerned," advises Dr Bowes.

On bald heads, Dr Banwell says you should visit a doctor if you notice a newly developed sore that isn't healing or keeps crusting over.

1. The Banwell Clinic.

2. Iannacone, Hughes, and Green "Effects of sunscreen on skin cancer and photoaging".

3. Sander, Sander, Burbridge, Beecker "The efficacy and safety of sunscreen use for the prevention of skin cancer".

4. Cancer Research UK "How do sun beds cause skin cancer?".

5. Skin Cancer Foundation "Melanoma warning signs".