Expert tips to spot and prevent skin cancer

You deserve to feel confident in your skin – and that starts with protecting it. Skin cancer is more common than many people realize. Knowing the early signs and symptoms, along with simple prevention steps, helps you take charge of your health.

Maya K. Thosani, MD, dermatologist, shares key tips to help you spot skin cancer early and protect your skin year-round.

1. Is a mole that's changing more troubling than a new one?

Both can be signs of abnormal skin changes. Moles you’ve had for years can start to look unusual, while new ones might also raise concern. “Keep an eye on both and stay alert for any changes,” Dr. Thosani says. “Specifically look for any related to number of colors in the mole, the size enlarging, or if it begins to bleed or itch.” 

3. Which five areas should you check for changing or abnormal moles?

Focus on your face, scalp (especially if you’re losing hair), forearms, backs of your legs (especially if you’re a woman) and your back. These spots are common for abnormal moles, so check them regularly.

“Pay close attention to areas of your body that had blistering sunburns when you were younger,” Dr. Thosani states. “Having five or more blistering sunburns between ages 15 and 20 can increase your risk of melanoma by 80%.”
 

4. Can people with brown skin get skin cancer?

Yes, skin cancer can affect anyone, regardless of skin tone. While some types are more common in certain skin colors, everyone should watch for skin cancer signs and symptoms.

People with lighter skin have less natural protection from their melanocytes, making them more prone to skin cancers caused by UV exposure, such as melanoma and other common skin cancers.

Some types of melanoma can develop in areas that don’t get much sun. These can affect anyone, no matter what their skin type. There’s also a slightly higher risk of acral melanoma, which appears on the palms, soles or under the nails, in Black and Asian populations. Be sure to check between your toes and around your nail beds during skin checks.
 

5. Which skin cancer is the most serious: melanoma, basal cell carcinoma or squamous cell carcinoma?

Melanoma is the most aggressive form of skin cancer. Some types can spread quickly, which is why finding them early is so important for the best outcome.

Basal cell carcinoma is the least aggressive. It rarely spreads but can grow deep and cause significant damage if left untreated.

Squamous cell carcinoma falls in between. It’s more aggressive than basal cell and, in some cases, can spread to the lymph nodes — especially when it develops in higher-risk areas like the lips or ears or if it has certain aggressive features under the microscope.
 

6. What’s the most important skin care advice to prevent skin cancer?

Use broad-spectrum sunscreen with SPF 30 or higher every day to protect against UVA and UVB rays. Reapply every two hours, especially at midday regardless of sun or clouds, to keep your skin healthy and lower your risk.
 

7. With so many SPF numbers, what sunscreen is best?

Go for at least SPF 30 with broad-spectrum coverage. This protects your skin from burning and premature aging caused by sun exposure. Most dermatologists agree the best sunscreen is the one you’ll actually use. Whether you prefer mineral or chemical formulas, look for broad-spectrum coverage and, if possible, added antioxidants for extra protection. Apply it in a smooth, even layer to your face, neck, ears and upper chest every day.
 

8. Is the SPF in makeup enough daily sunscreen?

No. Makeup SPF isn’t enough by itself. Apply a dedicated sunscreen with at least SPF 30 underneath your makeup for full protection.

“Protecting your skin matters,” Dr. Thosani says. “Knowing the signs and symptoms of skin cancer and taking preventive steps can make all the difference in staying safe. With the right care and regular skin checks, you can enjoy the outdoors confidently. If you notice anything unusual, schedule a visit with a dermatologist.”