Dr. Sebastian Podlipnik holding a dermatoscope

Skin cancer

Dermatology Blog

illustration of a longitudinal melanonychia that can occur in moles and melanoma of the nail
Skin cancer

Melanonychia: moles and melanoma on the nail

Melanonychia, that dark line on the nail, worries many patients. As a dermatologist specializing in melanoma, I explain what it is, when it is benign, when to suspect a nail melanoma and what we do in consultation to evaluate it.

Sunburn in a woman exposed to sunlight
Skin cancer

How to treat a sunburn?

Sunburn is a reality that affects many people around the world, especially in summer. These burns can be very painful and can be

Follow-up of digital dermoscopy in Hospital Clínic de Barcelona
Skin cancer

Digital dermoscopy for mole monitoring

The prognosis of a skin cancer can be very different depending on how long it has been growing on our skin. One of the great challenges

Minimalist cover image of the best sunscreens
Skin cancer

Best Dermatologist-Recommended Sunscreens [2026]

What is the best sunscreen? As a dermatologist specializing in melanoma at the Hospital Clínic in Barcelona, I share my selection of the 13 best sunscreens for face, body, sports, and children, along with the clinical criteria I apply in consultations.

Women eating fatty fish, vitamin D, cheese, and sunbathing
Skin cancer

Vitamin D and sun: How much sun should I get to produce it?

Almost half of the world's population has insufficient vitamin D levels. I explain how much sun time you need depending on the season, why more sun does not produce more vitamin D, whether sunscreen blocks it and when you need supplements. With exposure chart and updated scientific evidence.

Sebastian Podlipnik - Skin cancer

Sebastian Podlipnik

Dermatology Blog

I am a dermatologist and cum laude PhD and author of multiple research studies. I specialize in skin cancer, laser technologies and longevity in dermatology. The intention of this blog is to bring you closer to topics of interest in dermatology and research.

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