Big Crazy Buffalo Bison Tallow Shampoo Bar, Mountain Rain (2-Pack, 4 oz) — Sulfate-Free Moisturizing

Pure bison tallow shampoo bars scented as Mountain Rain deliver a sulfate-free, low-ingredient wash that cleanses and moisturizes hair using traditional tallow, oils, and natural fragrance.

These Big Crazy Buffalo Mountain Rain shampoo bars come as a two-pack (4 oz each) and combine rendered bison tallow with olive, coconut and castor oils plus a light Himalayan sea-salt, moss, and freesia aroma. Made by a small Nebraska family operation, the formula is intentionally simple: no synthetic preservatives, dyes, alcohols, parabens, or petrolatum. A touch of mica gives the bars a green tint while essential oils provide the scent.

What makes bison tallow different from typical shampoo ingredients?

Bison tallow closely resembles human sebum, which helps it absorb quickly and balance natural oils rather than coating or weighing hair down. Unlike many commercial cleansers that rely on harsh surfactants, this bar uses coconut oil and castor oil to create lather and gentle cleansing without stripping moisture.

• Skin-like lipids for fast absorption and lightweight hydration
• Gentle cleansing action from coconut and castor oils
• No synthetic foaming agents, preservatives, or dyes

How will this shampoo bar affect dry, frizzy, or color-treated hair?

The formula emphasizes nourishing fats and fat-soluble vitamins (A, D, E, K) that help restore moisture and improve hair manageability over time. Because it avoids harsh chemicals and alcohol, it’s less likely to aggravate dryness or strip color, but results vary with hair porosity and prior product buildup.

• Vitamin-rich tallow supports long-lasting hydration and flexibility
• Castor oil adds slip and shine for smoother strands
• Works best after gradually transitioning from sulfates to natural cleansers

How do I use and store the Mountain Rain shampoo bars for best results?

Rub the bar between wet hands or directly on wet hair to create a light lather, then massage into the scalp and rinse thoroughly. Allow the bars to dry between uses on a draining soap dish to extend lifespan; each 4 oz bar offers many washes depending on frequency and amount used.

• Wet hair and bar, lather on scalp, rinse well
• Store on a ventilated soap tray to avoid softening
• Two bars provide travel convenience and longer use

Are there any ingredients to watch for if I have allergies or sensitivities?

The ingredient list is short and transparent: bison tallow, olive oil, coconut oil, castor oil, natural essential oil scent, mica pigment, and lye water used in saponification. Those with sensitivities to specific essential oils or mica pigments should patch-test first and review the label for potential allergens.

• Contains natural essential oils—identify specific oils if you’re sensitive
• Mica used for color may irritate very reactive scalps
• Free from parabens, phthalates, petrolatum, SLS, and synthetic preservatives

Who is this for: Big Crazy Buffalo Mountain Rain shampoo bars suit people seeking a low-ingredient, ancestral-style hair cleanser that focuses on nourishment rather than foam. It’s a good match for those who prefer sustainably sourced, family-made products, want to reduce synthetic additives in their routine, or need a moisturizing option that won’t feel greasy. If you have very fine hair that clogs easily or a specific essential oil allergy, consider a small patch test or alternate formulation.

Ingredients

100% Pure Bison Tallow, and Lye Water