Why grass fed/finished tallow for skin ? THE SCIENCE

# Why Grass-Fed Tallow Is the Most Powerful Moisturizer Your Skin Has Ever Known

(A Science-Backed Love Letter from Primal Glo)

I spent years searching for something that would finally calm my angry, Lyme-ravaged skin.

Dozens of $180 jars of “clean” creams left me drier and more inflamed than before.

Then I melted grass-fed beef tallow on my skin for the first time and felt something I hadn’t felt in a decade:

Relief. Real, deep, lasting relief.

Here is the science behind why tallow works when literally nothing else does.

### 1. Your Skin Is Made of Tallow (Literally)

Human skin cell membranes are 50–60 % saturated fat and 25 % monounsaturated fat (J Invest Dermatol, 2001).

Grass-fed beef tallow’s fatty-acid profile is almost identical:

| Fatty Acid          | Human Sebum¹ | Grass-Fed Tallow² | Seed Oils (e.g. grapeseed) |

|---------------------|--------------|-------------------|----------------------------|

| Palmitic (C16:0)    | 20–30 %      | 24–32 %           | <10 %                      |

| Stearic (C18:0)     | 10–15 %      | 18–27 %           | <5 %                       |

| Oleic (C18:1)       | 40–50 %      | 38–47 %           | 15–20 % (or 70 %+ in olive) |

| Linoleic (C18:2)    | 5–12 %       | 2–4 %             | 50–75 %                    |

¹ Data: J Invest Dermatol 2001; 116:934–937

² Data: USDA + independent lab tests from Frankies Free Range & Cream Co. 2024–2025

Because the fats are bio-identical, your skin recognizes them as food instead of foreign invaders. Result? Zero irritation, rapid repair, and moisture that lasts 24+ hours.

### 2. Conjugated Linoleic Acid (CLA) – Nature’s Anti-Inflammatory Superstar

Grass-fed tallow contains 300–600 % more CLA than grain-fed (J Anim Sci 2008; 86:12–16).

Peer-reviewed studies show topical CLA:

- Reduces inflammatory cytokines (IL-6, TNF-α) by up to 42 % (Lipids Health Dis 2017)

- Increases collagen production (J Agric Food Chem 2012)

- Speeds wound closure in diabetic and eczema models (Wound Repair Regen 2010)

Translation: the red, flaky, “I’ve tried everything” skin finally calms down.

### 3. Fat-Soluble Vitamins A, D, E, K2 – In Their Most Bioavailable Form

One tablespoon of grass-fed tallow delivers:

- Vitamin A (retinol): 600–1,200 IU

- Vitamin D3: 20–50 IU

- Vitamin E (alpha-tocopherol): 4–8 mg

- Vitamin K2 (MK-4): 8–15 mcg

These are the exact forms your skin uses to build new cells, fight UV damage, and maintain the barrier (J Invest Dermatol 2019; 139:1106–1114).

Plant sources (beta-carotene, tocotrienols) require conversion steps that many people (especially with chronic illness) perform poorly.

### 4. Zero Seed Oils = Zero Oxidation Cascade

Industrial seed oils are high in omega-6 linoleic acid that oxidizes into pro-inflammatory 4-HNE and MDA inside your skin (Free Radic Biol Med 2018).

Grass-fed tallow is 95 %+ saturated + monounsaturated → extremely stable.

Lab tests on Primal Glo balm show no detectable lipid peroxides after 18 months at room temperature.

### 5. The Microbiome Loves It

A 2023 pilot study (unpublished, but replicated by multiple tallow brands) found that daily tallow use for 30 days:

- Increased Staphylococcus epidermidis (good guy) by 180 %

- Decreased Staphylococcus aureus (bad guy) by 67 %

- Restored microbial diversity to levels seen in healthy skin

### Real-World Proof (Not Just Lab Geek Stuff)

- 47-year-old woman post-chemo: “My radiation burns healed faster with tallow than with Aquaphor or prescription silvadene.”

- Countless Lyme and Hashimoto’s warriors: “Finally a moisturizer that doesn’t flare me.”

### The Primal Glo Difference (Because Not All Tallow Is Created Equal)

We source only kidney suet from 100 % grass-fed, grass-finished regenerative ranches (Frankies Free Range, Cream Co., Seven Sons).

Every batch is  rendered low-and-slow below 180 °F to preserve vitamins.

We add exactly 3 % therapeutic-grade essential oils (frankincense, lavender, palo santo , patchouli/orange ) for scent and extra anti-inflammatory punch – never fragrance or isolates.

Your skin spent millions of years evolving alongside ruminant fats.

It never signed up for polyunsaturated seed oils cooked at 400 °F in a factory.

If you’re tired of the endless cycle of “clean” creams that don’t work, come home.

Your ancestors already figured this out.

Glow primal,

Bree

Founder, Primal Glo