6 min readAntioxidantBrighteningDaytime
Vitamin C, decoded: which form actually works
L-ascorbic acid versus the gentler derivatives — what brightens, what defends, and what to ignore on the label.
Used in 1 product
Read explainerThe glossary & journal
Read the ingredients
We don't expect you to take “clean” on faith. These explainers cover what each active actually does, the dose that matters, and exactly which Lumen products use it.
Quick glossary
- Vitamin C (L-ascorbic acid)Antioxidant that brightens tone and defends against daylight damage.
- Retinal (retinaldehyde)A fast, gentle retinoid that smooths lines and refines pores.
- Niacinamide (vitamin B3)Balances oil, supports the barrier and evens tone.
- Hyaluronic acidA humectant that draws water into skin at multiple depths.
- CeramidesBarrier lipids that repair and waterproof the skin's outer wall.
- SqualaneA light, skin-identical emollient that hydrates without grease.
- Panthenol (pro-vitamin B5)A soothing humectant that calms and softens irritated skin.Reference
- Salicylic acid (BHA)An oil-soluble acid that exfoliates inside the pore.Reference
- GlycerinThe workhorse humectant — simple, proven, in almost everything.Reference
Ingredient explainers
6 min read
7 min readRetinoidAnti-ageingNighttime
Retinal vs retinol: the one-step difference
Retinaldehyde sits closer to retinoic acid than retinol — here's what that means for results and for your skin's patience.
Used in 1 product
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5 min readBarrierOil controlEveryday
Niacinamide: the quiet multitasker
Oil balance, barrier support and a more even tone from one of the best-tolerated actives there is.
Used in 2 products
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5 min readHumectantHydrationEveryday
Hyaluronic acid: hydration, properly explained
It's a humectant, not a moisturiser — and the molecular weight on the label tells you how it behaves.
Used in 2 products
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6 min readBarrierHydrationSensitive
Ceramides and the 3:1:1 barrier ratio
Your skin's outer wall is built from specific lipids in specific proportions — and you can replace them.
Used in 2 products
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4 min readEmollientHydrationEveryday
Squalane: the lightweight oil that suits almost everyone
A stable, skin-mimicking emollient that hydrates without heaviness — even for oily skin.
Used in 4 products
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