GLOW Standard · Skincare · Serum
Vitamin C, retinal, BHA, niacinamide. Four actives, four bottles, one combined wardrobe that does the work a dermatologist would tell you to do.
All types · AM
SkinCeuticals C E Ferulic
Fifteen per cent L-ascorbic, one per cent vitamin E, half a per cent ferulic acid, the exact ratio Dr Sheldon Pinnell published,
All types · PM
Medik8 Crystal Retinal
A retinaldehyde stepped 1, 3, 6, 10, 20 so you can climb without burning the barrier on the way up.
Oily · combination · congested
Paula's Choice Skin Perfecting 2% BHA Liquid
Two per cent salicylic acid at the pH that actually works on pore-trapped sebum.
The verdict Winner: SkinCeuticals C E Ferulic · Glow 9.3/10 · Read the brand profile →
The verdict
Buy SkinCeuticals C E Ferulic at AU$260. It scored 9.3 on GLOW Standard, and twenty years on it is still the only L-ascorbic morning serum we can recommend without an asterisk. If the spend isn’t this month’s problem to solve, The Ordinary Niacinamide 10% + Zinc 1% at AU$12 is the bottle that does the most for the least and behaves with everything else in the bathroom. Two very different serums; both earned their spots.
The ranking
A serum is the most expensive square centimetre in the routine. These four earn the spend: one antioxidant, one retinoid, one chemical exfoliant, one barrier-and-tone bottle. Order is intentional; the wardrobe is more useful than any single pick.
SkinCeuticals
Fifteen per cent L-ascorbic, one per cent vitamin E, half a per cent ferulic acid, the exact ratio Dr Sheldon Pinnell published, still the most rigorously studied vitamin C in the category. Brightens, photo-protects, and stabilises the skin in front of UV. We’ve never had a panellist regret a bottle.
Buy at Adore Beauty
Medik8
A retinaldehyde stepped 1, 3, 6, 10, 20 so you can climb without burning the barrier on the way up. Faster results than retinol (one fewer conversion step), gentler than tretinoin. The PM serum the panel kept buying back.
Buy at Adore Beauty
Paula's Choice
Two per cent salicylic acid at the pH that actually works on pore-trapped sebum. Filed under exfoliant; behaves like a serum. The most reliable congestion-clearer we’ve tested, and the only chemical exfoliant we’d use under retinal on alternating nights.
Buy at Paula's Choice
The Ordinary
The cheapest entry on the page and the most repurchased across the panel. Visibly evens tone, calms oil production, and behaves under absolutely everything. The bottle that gives a $12 answer to a $200 question.
Buy at Adore BeautyHow we tested
The brief: build a wardrobe of four serums that cover the four canonical jobs, antioxidant defence, cell-turnover, exfoliation, and tone-and-barrier, and have each one earn its slot independently. We trial-stocked twenty-three serums from $9 to $480. Each panellist held one of the four jobs for a fortnight, then rotated, so every serum was scored by every panellist across at least one cycle.
We score four things only: tolerance at week one, visible change at week four, layering behaviour (does it pill under SPF, does it disrupt the next product), and the price-per-bottle judgement. The panel spans Fitzpatrick II through V; two members are on prescription tretinoin and tested the C E Ferulic and niacinamide only; one has melasma and gave us the read on the vitamin C lift.
Chief Editor GLOW editorial team led the read-out. Four serums cleared the bar across all four scoring dimensions. The other nineteen didn’t. The four below are the wardrobe the editors actually run at home.
Field note
The Australian serum market is split between two camps that don’t talk to each other. The clinical camp, SkinCeuticals, Medik8, La Roche-Posay’s Pure Vitamin C, sells on a peer-reviewed paper and a derm referral. The lifestyle camp, the brands that flood Instagram, sells on a sleek bottle and a celebrity face. Both can be right. Most of the time the clinical camp is.
What matters: the active, the concentration, and whether the bottle is going to be empty in eight weeks or still half-full at the back of the cabinet in March. A $260 C E Ferulic finished in three months is cheaper than a $80 imitation that sits unused. Read the INCI, not the press release. And the answer to “can I use vitamin C and retinal in the same routine” is yes, C in the morning, retinal at night, not in the same five minutes.
More: the cleanser ranking · the moisturiser ranking · the skincare hub · GLOW 100 · GLOW Standard.
SkinCeuticals C E Ferulic at AU$260 is GLOW's 2026 winner with a GLOW Score of 9.3. It is the morning vitamin C against which every other vitamin C is judged. For under fifty dollars, The Ordinary Niacinamide 10% + Zinc 1% at AU$12 holds its own (GLOW Score 8.6).
GLOW editorial team led the panel, with five additional Glow editors spanning Fitzpatrick II-V skin types and acne, pigmentation and ageing concerns. Test ran six weeks in Melbourne, April-May 2026.
Every serum is scored under GLOW Standard: efficacy 30%, formulation 25%, tolerability 20%, value 15%, distinction 10%. Six-week minimum test, named editor, second-editor review before publication.
Adore Beauty stocks SkinCeuticals C E Ferulic at AU$260 for 30ml. Also available at MECCA Cosmetica counters and direct from skinceuticals.com.au.
The Ordinary Niacinamide is the panel pick for reactive skin, fragrance-free, low irritation. Medik8 Crystal Retinal at lower strengths (1 or 3) is the gentlest way to climb on retinoids. C E Ferulic is well tolerated for most skin but contains 15% L-ascorbic acid and benefits from gradual introduction.
GLOW's serum ranking is re-tested annually and refreshed any time a tested formula changes meaningfully. This edition was last updated 2 June 2026.
Yes, vitamin C in the morning under SPF, retinol at night. The two don't have to be applied at the same time and they do different work. GLOW's protocol is C E Ferulic morning, Crystal Retinal three nights a week.