Skip to content
STRATUM Skin Science

FRM Formula

Serum

Dual-Weight Hyaluronic Serum

Two hyaluronic acid weights, aimed at two different depths on purpose.

$46 30ml

Higher-molecular-weight sodium hyaluronate sits at the surface and holds water there; the hydrolyzed, lower-molecular-weight form is included specifically because it is formulated to reach further into the viable epidermis, where the two are understood to behave differently rather than as one interchangeable ingredient at two prices.

Niacinamide is included at a supporting level here too — this is a hydration serum first, and the anchor list above reflects that ordering.

Built around

  • 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.

  • Niacinamide Epidermis

    Reaches the living epidermis, where it is commonly associated with supporting the skin's own lipid production.

Close-up macro photograph of water droplets beaded on a glass surface.
Where this formula works

INCI Full Ingredient List

Full INCI ingredient list, in formulated order
# INCI Name
01 Aqua
02 Glycerin
03 Sodium Hyaluronate
04 Hydrolyzed Sodium Hyaluronate
05 Niacinamide
06 Panthenol
07 Betaine
08 Xanthan Gum
09 Sodium Hydroxide
10 Phenoxyethanol
11 Ethylhexylglycerin

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

USE How To Use

AM and PM, on damp skin, sealed with a moisturiser within a minute or two. In very low ambient humidity, follow immediately with an occlusive moisturiser -- a humectant with no moisture in the air to draw from can pull water from deeper skin instead, which is the opposite of the intended effect.