Bright Ascorbic Serum 15%

An unstable antioxidant, formulated and packaged the way stability actually requires.

$72 30ml

15% L-ascorbic acid — the form of vitamin C with the most published research behind it, and also the least stable, which is why it ships in dark UV-blocking glass rather than a clear or lightly tinted bottle. Ferulic acid and tocopherol are included as co-antioxidants, a stabilisation pairing with real published support rather than a proprietary blend name standing in for an ingredient list.

Sodium hyaluronate is included at a supporting level to offset the dryness some users report from ascorbic acid at this concentration — it is not the star ingredient here and the depth diagram above reflects that.

Built around

L-Ascorbic Acid Epidermis
An antioxidant and a cofactor the skin uses in collagen synthesis -- but unstable, so formulation and storage matter as much as concentration.
Hyaluronic Acid (mixed MW) Epidermis
Higher molecular weights hold water at the surface; lower molecular weights are formulated to reach further into the viable epidermis.

An amber glass dropper bottle with a glass pipette dropper, resting on a wooden surface.

Where this formula works

INCI Full Ingredient List

Full INCI ingredient list, in formulated order
#	INCI Name
01	Aqua
02	Ascorbic Acid
03	Propanediol
04	Sodium Hyaluronate
05	Glycerin
06	Ferulic Acid
07	Tocopherol
08	Panthenol
09	Xanthan Gum
10	Sodium Hydroxide
11	Phenoxyethanol
12	Ethylhexylglycerin

Listed in descending order of concentration, as required for cosmetic labelling. Trace/regulatory-threshold ingredients appear last.

USE How To Use

AM only, before SPF. Store away from direct light and heat, and use within roughly 3 months of opening -- L-ascorbic acid oxidises, and a serum that has turned yellow or brown has lost most of its antioxidant activity regardless of what the label concentration says. Patch test 48 hours before first use.