Glow isn't a filter. It's what healthy, well-hydrated, evenly renewing skin looks like when light hits it. When skin looks dull, grey or uneven, something in that process has slowed down or been disrupted. The good news is that most of the causes are well understood.
What makes skin look dull
Dehydration
Skin that's short of water reflects light unevenly and looks flat. Air conditioning, hot showers, harsh cleansers and not moisturising all contribute.
Slower renewal
Your skin constantly sheds dead cells and replaces them. As we age, and when skin is stressed, this slows, and dead cells build up on the surface.
Sun exposure
UV drives uneven pigmentation, breaks down collagen over time and generates free radicals. It's the biggest single driver of uneven tone.
Post-breakout marks
Inflammation can trigger extra melanin, leaving darker marks after spots heal. These can take months to fade, especially without sun protection.
Lifestyle
Poor sleep, stress, smoking and pollution all show on the skin.
How to bring back radiance, step by step
- Sunscreen, every day. Broad-spectrum, SPF 30 or higher, reapplied when outdoors. No ingredient can outpace daily sun damage.
- Hydrate the barrier with a moisturiser morning and evening.
- Support renewal with retinol, introduced slowly, a few evenings a week. See retinol for beginners.
- Even the tone with niacinamide, which research links to a more even-looking complexion.
- Defend with antioxidants such as vitamin C and vitamin E.
Exfoliation: the right amount
Gentle exfoliation can help remove built-up dead cells, but more is not better. Harsh scrubs and daily peels give a short-lived sheen while damaging the barrier, and damaged skin often ends up looking duller and more uneven. One to three times a week with a gentle product is plenty for most people. Read why aggressive skincare backfires.
Dark spots and marks
Marks left after breakouts respond best to three things together: calming breakouts early so fewer marks form, consistent sunscreen so marks don't darken, and tone-evening ingredients used patiently over weeks to months.
Lifestyle habits that show
- Prioritise sleep; skin repairs itself overnight.
- Don't smoke.
- Drink enough water and eat a varied diet rich in fruit and vegetables.
- Manage stress where you can; it shows up in skin.
How long does it take?
It varies. Skin renews over weeks, so give a consistent routine six to eight weeks before judging it. Pigmentation often takes longer.
When to see a dermatologist
Some pigmentation has medical causes and needs professional assessment. If patches are spreading, changing shape or colour, itching, or look unusual, please see a doctor. Our guidance doesn't diagnose pigmentation conditions. Learn more about pigmentation and dullness.
This article is general skincare information, not medical advice or a diagnosis. If your skin is painful, worsening quickly or you're concerned, please see a dermatologist or doctor.
Good to know
How long does it take to improve dull skin?
It varies. Skin renews over weeks, so give a consistent routine six to eight weeks before judging it.
Does vitamin C help with dark spots?
Vitamin C is an antioxidant commonly used for brightness and tone. Combined with daily sunscreen and niacinamide, it's part of an evidence-led approach to uneven tone.
References
- Bissett DL et al. Niacinamide: a B vitamin that improves aging facial skin appearance. Dermatologic Surgery, 2005;31(7):860–865.
- Telang PS. Vitamin C in dermatology. Indian Dermatology Online Journal, 2013;4(2):143–146.
