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Protect Oil andBloom
FinishAM / PMLipid Vitamin C
$85.00
Protect Oil andBloom
Radiance + Lipid Finish

Protect Oil

A golden lipid vitamin C finish with 10% tetrahexyldecyl ascorbate, blueberry, sea buckthorn, rosehip, and biomimetic olive lipids. It cushions the final layer, supports visible radiance, and gives skin a soft treatment glow.

All Skin TypesFinishAM / PMGolden Oil-Gel
$85.00 30 ml / 1 fl oz
Size1oz/30ml2oz/60mlSold out
100% PLASTIC-FREE
Formulated & shipped from Resonance Marin, Marin County, CA
Returns accepted within 30 days — half-full minimum
10%
Tetrahexyldecyl ascorbate, a lipid-soluble vitamin C derivative.
Finish
Final lipid layer when skin is stable and glow is the goal.
AM / PM
Use before SPF in the morning or as the final evening finish.
100%
Plastic-free aluminum packaging, fully recyclable.
The Brief

The lipid vitamin C
finish.

Protect Oil is the Finish step: a golden treatment oil designed to cushion the final layer, support visible radiance, and leave skin with a soft, lipid-rich glow.

Read more

10% tetrahexyldecyl ascorbate works alongside blueberry seed oil, sea buckthorn, rosehip, camellia, evening primrose, and biomimetic olive lipids to support antioxidant care and a smoother, more resilient-looking finish. Use it after serums or cream when skin is stable and a lipid finish is desired.

Result: skin looks brighter, softer, and more luminous without a heavy oil feel.

The Brief
Where it fits
Where
it fits.
Morning
or evening.

Protect Oil is the Finish step. Use it after serum or cream steps when skin is stable and you want a lipid vitamin C finish. In the morning, apply Shield SPF 35+ after Protect Oil.

01
Cleanse
Gentle Cleanser
Removes buildup without stripping.

Cleanse first so the routine lands on balanced skin. A non-stripping cleanse keeps the barrier comfortable before treatment and finish steps begin.

02
Activate
XO Essence
First layer after cleansing.

Press or mist into damp skin after cleansing. XO Essence helps hydrate, calm, and prepare the surface for the layers that follow.

03
Treat
C Serum
Daily water-light vitamin C treatment.

Apply in the morning when radiance and tone are the focus. C Serum is the Treat step, while Protect Oil is the lipid vitamin C finish.

04
Seal
Recovery Cream
Comfort seal when skin needs support.

Use Recovery Cream before Protect Oil when skin feels dry, reactive-looking, or depleted. Recovery Cream is the Seal step.

05
Finish
Protect Oil
Lipid vitamin C finish.
You are here

Warm a small amount between fingertips and press over face, neck, and décolleté after serum or cream steps. Use when skin is stable and a soft lipid glow is desired.

06
Protect
Shield SPF 35+
Final morning protection.

Apply as the final morning step after Protect Oil has settled. SPF remains the required Protect step.

Build Around This Step
Choose the next level of commitment: one next step, a pair, a starter trio, or the full system.
C Serum Treat
Radiance
C Serum

The daily water-light vitamin C treatment before Protect Oil.

$75.00Discover
Radiance System Complete
Radiance System
Radiance System

The full tone and radiance sequence with treatment, finish, renewal, and protection.

$434.00View System
2015
The product I quietly love most. Moisturizer when skin wants a moisturizer. Slip for gua sha and cupping when the tools need something to glide on. Ten percent THCD makes it an active oil, not just a finishing one. Three jobs, one tube.
— Daniella Inbar, Founder
The Science

A finish can do more than shine: Protect Oil brings lipid vitamin C, botanical oils, and antioxidant care into the final layer.

01
10% THD Ascorbate / Lipid Vitamin C
Tetrahexyldecyl ascorbate is a stable, lipid-soluble vitamin C derivative used here at 10%. It supports visible radiance, tone, and antioxidant care in a finish step that layers beautifully over serums or cream.
02
Blueberry Seed Oil / Antioxidant Care
Vaccinium Myrtillus Seed Oil brings antioxidant-rich botanical support to the lipid layer. It helps round out the formula's radiance and resilience profile without making the texture feel heavy.
03
Sea Buckthorn Berry / Golden Carotenoids
Sea buckthorn berry pulp extract gives the oil its rich golden tone and supports a nourished, healthy-looking glow. Keep the claim focused on visible radiance and comfort.
04
Rosehip + Camellia Oils / Soft Finish
Rosehip and camellia seed oils help soften the feel of skin and create a smooth, flexible finish. They support the elegant glide that makes Protect Oil useful as a final treatment layer.
05
Olive Unsaponifiables / Biomimetic Lipids
Hydrogenated olive oil unsaponifiables help create the oil-gel cushion and skin-compatible finish. They support a soft lipid layer without the heavy feel of a traditional face oil.
From the Treatment Room

Tips
from the spa.

Protect Oil is the finish we reach for when skin is stable and needs a soft lipid glow. In the treatment room, it gives enough slip for massage or tools while leaving the final layer polished, cushioned, and radiant.

Vitamin C Finish
Layer Protect Oil over C Serum when the routine is focused on radiance. C Serum is the water-light treatment step, and Protect Oil is the lipid vitamin C finish.
Massage Slip
Warm a small amount between palms and press over the face, neck, and décolleté before facial massage or gua sha. Use gentle pressure and keep the oil layer even.
Morning Glow Finish
Apply a small amount after serums or cream, then let it settle before Shield SPF 35+. This keeps the finish luminous without replacing daily SPF.
Evening Lipid Layer
Use as the final evening finish when skin is stable and you want more glow. If skin feels reactive or depleted, choose Recovery Cream first or use it instead.
The Details

Every question,
answered.

Formulated at Resonance Marin. Tested on real skin. These are the questions that matter most.

Where does Protect Oil fit in the system?
Protect Oil is the Finish step. Use it after serum or cream steps when skin is stable and a lipid vitamin C finish is desired. In the morning, apply Shield SPF 35+ after it.
Is Protect Oil the same as SPF?
No. Protect Oil is a lipid vitamin C finish, not sunscreen. Shield SPF 35+ is the final Protect step every morning.
What makes THD ascorbate different from traditional vitamin C?
Tetrahexyldecyl ascorbate is a stable, lipid-soluble vitamin C derivative. In Protect Oil, it supports visible radiance and antioxidant care in a soft lipid finish.
Should I use Protect Oil or Recovery Cream?
Use Recovery Cream when skin feels dry, reactive-looking, depleted, or over-treated. Use Protect Oil when skin is stable and you want a lipid treatment finish.
Can I use Protect Oil with C Serum?
Yes. C Serum is the daily water-light vitamin C treatment, and Protect Oil is the lipid vitamin C finish. They can be used together when the routine is focused on radiance.
Can I use Protect Oil with Renew PM?
Yes, but keep the routine simple. If skin feels dry or reactive, use Recovery Cream instead. If skin is stable, Protect Oil can be used as a final lipid finish.
Will Protect Oil feel heavy?
No. The oil-gel texture is designed to feel cushioned and smooth, not greasy. Use a small amount and press it in as the final finish.
The Scent + Texture
Golden oil-gel, soft treatment glow.

A cushioned oil-gel that warms between fingertips, presses smoothly into skin, and leaves a luminous finish without a heavy oil feel. The aromatic profile is inspired by Meyer lemon blossom, night-blooming jasmine, and clary sage.

Meyer Lemon BlossomTop
Night-Blooming JasmineHeart
Clary SageHeart
Golden Oil-GelTexture
Full Ingredient List
Every ingredient, listed.

Tap to expand the complete INCI ingredient declaration.

Hydrogenated Ethylhexyl Olivate, Hydrogenated Olive Oil Unsaponifiables, Camellia Oleifera (Camellia) Seed Oil, Oenothera Biennis (Evening Primrose) Oil, Tetrahexyldecyl Ascorbate, Rosa Canina (Rose Hip) Seed Oil, Glycerin, Coco-Caprylate/Caprate, Aqua, Sucrose Laurate, Sucrose Stearate, Vaccinium Myrtillus (Blueberry) Seed Oil, Psoralea Corylifolia Seed Oil, Sodium Hyaluronate, Hippophae Rhamnoides (Sea Buckthorn Berry) Pulp Extract, Tocopherol, Citrus Reticulata Essential Oil, Lavandula Angustifolia Essential Oil, Salvia Sclarea Essential Oil, Jasminum Sambac Absolute, Limonene, Linalool, Geraniol, Benzyl Alcohol

Finish with lipid vitamin C and a soft treatment glow.

Protect Oil cushions the final layer with 10% THD ascorbate, botanical oils, and a golden oil-gel finish for skin that looks luminous and polished.

$85.00Protect Oil
View Radiance System →