Editor's note

Glow isn't a product. It's what happens when light bounces off a smooth, hydrated surface. When that surface is covered in a backlog of dead cells, or depleted of water, or sitting behind a compromised barrier, light scatters instead of reflecting — and you look dull. The fix is mostly about removal and retention: exfoliating the surface regularly enough to keep it smooth, hydrating it adequately so it stays plump, and staying consistent enough that the skin doesn't have to catch up.

Other skin concerns

• Dehydration
• Dullness
• Uneven tone
• Texture
• Congestion
• Barrier damage
• Sun spots

What 'dullness' actually means

Dullness is a light reflection problem. Healthy skin reflects light back relatively evenly, giving it a lit quality. Dull skin scatters light — usually because the surface is rough (accumulated dead cells), depleted (dehydrated), or both. It's not a skin type; it's a surface condition.

Myth, meet fact

• Myth: Vitamin C serums give you glow overnight. Fact: Vitamin C is an antioxidant that supports brightening over weeks of consistent use.
• Myth: You need to exfoliate more to fix dullness. Fact: Over-exfoliation strips the barrier and causes inflammation that makes skin look worse. Two to three times per week is usually sufficient.
• Myth: Dullness means your skin is unhealthy. Fact: Dull skin is usually just tired or dehydrated skin. These are manageable, not permanent.

The beginner's path

Five pieces, in order. Around twenty minutes of reading.

1. Why skin goes dull — the light reflection explanation (3 min)
2. AHA exfoliants — what they do and how often to use them (5 min)
3. Vitamin C in a routine — the practical version (4 min)
4. Hydrating for surface glow (not just moisture) (4 min)
5. SPF and dullness — the connection people miss (3 min)

Approach, by use case

AHA exfoliant two to three times per week as the core method. Vitamin C serum every morning before SPF. Enzyme mask weekly for sensitive types. Hydrating serum every day as essential support. Niacinamide as a reliable multi-tasker. Physical exfoliant occasionally only on stable skin.

Everything we've published on dullness

• AHA exfoliants — cadence, not concentration
• Vitamin C serum — the form that actually holds up
• Winter dullness: the seasonal routine adjustment
• The glow myth — what skin can and can't do
• Lactic acid — the case for gentler exfoliation
• SPF daily — the brightening argument
• Glycolic acid: how to introduce it without reactivity
• Niacinamide and dullness — what it actually addresses
• When to use an enzyme mask
• Layering vitamin C and exfoliants — the timing