Sunscreen... What is the appropriate amount? And how to choose the best product?

SadaNews - With rising temperatures and increased exposure to sunlight, sunscreen emerges as an essential means of protecting the skin from the damage caused by ultraviolet rays and reducing the risk of skin cancer.

Despite its importance, dermatology experts warn that many people either do not apply enough sunscreen or do not use it correctly, which decreases its effectiveness.

How does the sun affect the skin?

According to the BBC, the skin does not need to suffer burns to be damaged; the UV rays emitted by the sun can cause cellular damage over time.

While moderate sun exposure helps the body produce vitamin D, which is essential for bone health and supporting the immune system, excessive exposure can lead to premature aging, wrinkles, skin cell damage, and an increased risk of skin cancer.

In the UK, new diagnoses of melanoma skin cancer have surpassed 20,000 cases annually for the first time.

The British Cancer Research Organization indicates that excessive exposure to UV rays is one of the main causes, and a significant proportion of cases can be prevented.

What is the appropriate amount of sunscreen?

The NHS indicates that the most common problem is using less than the required amount.

To protect the entire body, an adult needs about 6 to 8 teaspoons of sunscreen, applied to all exposed areas, such as the face, neck, ears, and scalp, as needed.

It is preferable to apply sunscreen 30 minutes before going out in the sun and to reapply it approximately every two hours, or after swimming, excessive sweating, or towel drying.

No sunscreen provides 100 percent complete protection, so it is also advised to wear appropriate clothing, hats, sunglasses, and to avoid direct sun exposure during peak hours.

What do SPF ratings mean?

The number on the sunscreen bottle indicates the Sun Protection Factor (SPF), which is the level of protection against UVB rays.

For example, a sunscreen with SPF 30 allows about 3 percent of UV rays to pass through, while SPF 50 allows about 2 percent.

Health authorities recommend using a sunscreen with an SPF of 30 or higher, choosing a product that offers good protection against both UVA and UVB rays.

Children need special protection

Children's skin is more sensitive to sun damage, so children under six months should not be exposed to direct sunlight.

After six months of age, it is preferable to use a sunscreen with at least SPF 50, along with wearing hats and protective clothing, and avoiding strong sun exposure at midday.

When suffering from sunburn

Burns typically show up as redness, pain, and heat on the skin, and may develop into peeling or blistering. To relieve symptoms, it is advised to stay away from the sun, use cold compresses or designated moisturizers after sun exposure, and drink plenty of water.

Conversely, one should avoid applying ice directly to the burned skin or using petroleum jelly, and seek medical advice if large blisters appear or if there is significant swelling or signs of heatstroke.

Simple daily prevention by using sunscreen correctly not only protects the skin but also helps maintain its health in the long term.