• Stable, non-oxidizing vitamin C
  • Boosts collagen production
  • Brightens and evens tone
  • Jojoba + argan base

What it is

A vitamin C serum from Pure Good, a small family ranch brand known for tallow skincare. It uses THD-A, a stable form of vitamin C that does not oxidize and turn orange in the bottle.

What it does

THD-A fights free radicals and supports collagen production for brighter, more even skin tone. Jojoba and argan oils carry it in a nourishing base, with natural vitamin E for extra environmental protection.

Who it's for

Anyone chasing brighter, more even skin without the irritation or instability of traditional vitamin C serums.

How to use

How much: A few drops for the face.

1. Press a few drops into clean skin.
2. Let it absorb for a minute.
3. Follow with moisturizer; use sunscreen in the morning.

Where it fits: After cleansing or toner, before moisturizer. Morning is ideal, with sunscreen after.

Inside the formula

Tetrahexyldecyl Ascorbate

A stable, non-oxidizing form of vitamin C that brightens and supports collagen.

Organic Jojoba Oil

Absorbs easily without buildup

Organic Argan Oil

Adds healthy-looking shine

Natural Vitamin E

An antioxidant that helps protect skin from environmental damage.

Full ingredient list
Tetrahexyldecyl Ascorbate (THD-A), organic jojoba oil, organic Argan oil, natural vitamin E.

Why we stock it

We stock this because most vitamin C serums go bad before you finish them. A stable form means it actually works to the last drop.

The Nexus standard

Vetted before it lists

Every brand on our shelf is screened before it can sell here. Fewer than you'd think make it through.

Direct from the maker

We work directly with independent brands and skip the retail markup, so you pay less for the same products.

30-day returns

Changed your mind? Returns are easy within 30 days on unopened products. Secure checkout, always.

About the brand

Pure Good LLC

Tallow skincare from an Oklahoma ranch

Pure Good started as a homeschool project: the Henderson kids, on their family's sixth-generation cattle ranch in Oklahoma, chose tallow for their lesson, and it became a brand. Their tallow-first skincare starts with 100% grass-fed suet fat from their own cattle, with no synthetic fragrances or fillers, made in the USA. Every ingredient is screened against known hormone disruptors, and the rule is simple: if they wouldn't put it on their own kids, it doesn't go in.

We stock Pure Good because their tallow balms are some of the simplest moisturizers we've seen (as few as two ingredients), and the whole family still packs the orders.

Skincare questions, answered

Where does this go in my routine?

Thinnest to thickest: cleanser, toner, serum, moisturizer, then SPF in the morning. This product's How to use section above tells you its exact step.

When will I see results?

Give it 4 to 6 weeks of consistent use — that's one full skin cycle. Hydration shows up in days; tone and texture take weeks. If your skin reacts badly (stinging, new breakouts that don't settle within a week), stop using it.

I have sensitive skin. Will this irritate me?

Patch test first: a dab behind your ear or along your jawline, wait 24 hours. Fragrance-free formulas are the safest bet for reactive skin — check the highlights on this page.