Tree Bottle Castor Oil + Biotin Shampoo Bar — Peppermint, 4.5 oz Solid Shampoo for Strengthening, Thicker-Looking Hair

Tree Bottle Castor Oil + Biotin Shampoo Bar is a solid peppermint-scented shampoo formulated to support stronger, thicker-looking hair while cleansing without parabens or sulfates.

This concentrated shampoo bar blends castor oil, biotin, and peppermint essential oil into a travel-friendly solid designed to deeply cleanse the scalp, reduce breakage, and encourage healthier-looking strands with regular use. Free from parabens and sulfates and made in the USA, the bar replaces liquid bottles to cut waste and simplify your routine. Below are common buyer questions answered clearly to help you decide if this bar belongs in your shower.

How does this shampoo bar help with hair strength and thickness?

The formula combines castor oil to hydrate and biotin to support resilient hair structure, while gentle surfactants cleanse without stripping oils. Over time, consistent use can improve manageability and reduce the appearance of breakage.

• Castor oil: moisturizing and nourishing for the scalp and hair cuticle.
• Biotin: supports stronger hair shaft formation.
• Peppermint oil: invigorates the scalp and leaves a fresh scent.
• Sulfate- and paraben-free: cleans without harsh stripping.

Will this bar work for my hair type—curly, fine, or color-treated?

The bar is formulated to be versatile: it provides cleansing and conditioning balance for many hair textures. Those with very dry or highly processed hair may prefer alternating with a moisturizing conditioner, while fine hair can benefit from the bar's residue-free finish.

• Curly hair: helps reduce frizz while maintaining natural texture.
• Fine hair: cleans without weighing strands down.
• Color-treated hair: free of sulfates to help preserve dye longer.
• Normal hair: daily use supports scalp health and shine.

How do I use the solid shampoo bar for best results?

Wet hair, rub the bar between your hands or directly on the scalp to create a lather, massage thoroughly, then rinse. Store the bar on a drainage-friendly dish between washes to prolong its life and preserve lathering ability.

• Wet hair and bar before lathering.
• Massage lather into scalp for at least 60 seconds.
• Rinse thoroughly and follow with conditioner if needed.
• Keep dry between uses to extend longevity.

What practical benefits does choosing a shampoo bar offer?

Beyond ingredient benefits, the solid format reduces single-use plastic, eases travel with TSA-friendly packaging, and often lasts longer than a comparable liquid bottle. The compact design also keeps showers less cluttered.

• Eco-friendly: less plastic waste compared with bottled shampoos.
• Travel-ready: spill-free and TSA-friendly solid form.
• Cost-effective: concentrated formula extends usage.
• Neat application: controlled, mess-free washing experience.

Who is this for? If you want a convenient, low-waste shampoo that combines castor oil, biotin, and peppermint to support stronger-looking, fuller hair without sulfates or parabens, this Tree Bottle bar is a practical option. It suits men and women seeking a straightforward, travel-friendly alternative to liquid shampoos, and those who prefer cleaner ingredient lists and a refreshing peppermint scent. For very dry or highly damaged hair, pairing the bar with a rich conditioner will give the best results.

Ingredients

Biotin, Batana Oil, Castor Oil, Sodium Cocoyl Isethionate, Kaolin Clay, Cocamidopropyl Betaine, Panthenol, Peppermint Essential Oil, Sodium Benzoate, Potassium Sorbate.