If you're looking to watch "La piel que habito" in 4K, here are a few suggestions:
The most reliable way to see La piel que habito in 4K with Spanish audio is through legitimate VOD (Video on Demand) platforms. Depending on your region (US, Spain, or Latin America), the film is typically available on:
already, or should I check which platform currently has it in their active catalog for your region?
This film relies on texture and lighting; low-quality rips ruin the atmosphere.