☀️ Why sunscreen indoors can still matter:
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UVA rays (which cause aging and contribute to skin cancer) can penetrate glass, including:
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Car windows
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Home or office windows
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Blue light from screens (phones, computers, TVs) may contribute to hyperpigmentation and premature aging, especially in people with darker skin tones or melasma.
💡 When to wear sunscreen indoors:
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Yes: If you sit near windows, drive during the day, or spend hours in front of screens.
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No: If you're in a windowless room with minimal screen exposure all day, it's not essential—but applying it in the morning still builds a consistent routine.
👉 A lightweight SPF 30 moisturizer is great for daily indoor use.