oely Biotin Hair Growth & Thickening Shampoo — 10.1 oz Fresh, Sulfate-Free, Root-Strengthening & Oil-Control

oely Biotin Hair Growth & Thickening Shampoo is a sulfate-free daily cleanser formulated with biotin, plant oils, and root-activating botanicals to help strengthen hair, control oil, and create the appearance of thicker strands.

This shampoo blends biotin, rosemary extract, tea tree, jojoba, argan, and panthenol into a gentle, plant-forward formula designed for people concerned about thinning, greasy, or fragile hair. Free from sulfates, parabens, synthetic dyes, and synthetic fragrances, it aims to cleanse without stripping natural oils while supporting scalp circulation and surface strength. The result is a restorative wash that targets root support, oil balance, and visible thickness for all hair types.

How does this shampoo support thicker-looking hair?

The formulation uses biotin and penetrating conditioning agents to help fortify each strand and reduce breakage, which can make hair look fuller over time. Botanical extracts support a healthier scalp environment so hair sits with more lift at the roots.

• Biotin helps improve strand resilience and body.
• Jojoba and argan oils condition without heavy buildup.
• Panthenol (pro-vitamin B5) smooths cuticles for shinier, plumper-looking hair.
• Root activators like rosemary encourage a refreshed scalp surface for better hair positioning.

Will it work for oily or dandruff-prone scalps?

Yes — the shampoo combines zinc and rosemary extract with tea tree oil to help balance sebum production and reduce flakiness while still providing a gentle cleanse. Its sulfate-free base avoids over-drying the scalp, so oil levels are regulated rather than stripped away.

• Zinc and rosemary help normalize oil without harsh surfactants.
• Tea tree oil provides a calming, clarifying effect for flaky scalps.
• Lightweight conditioning prevents hair from appearing flat after washing.

Is this safe for colored, chemically treated, or sensitive scalps?

The clean, plant-forward formula avoids sulfates, parabens, and synthetic dyes, making it gentler on color and chemically treated hair than many traditional shampoos. Sensitive scalps generally tolerate the formula well, but patch testing is recommended for those with extreme sensitivities or allergies.

• Sulfate-free wash preserves color better than aggressive cleansers.
• No parabens or artificial dyes lowers irritation risk.
• Suitable for daily use on most treated hair types when paired with a suitable conditioner.

How should I use the shampoo for best results?

Use as your regular shampoo: apply to wet hair, massage into the scalp for 60–90 seconds to encourage circulation, then rinse thoroughly. For optimal thickness benefits, follow with a compatible conditioner and use consistently; visible improvements in texture and reduced breakage typically appear after several weeks.

• Wet hair thoroughly before applying a quarter-sized amount (adjust to length).
• Massage to the scalp to activate botanical extracts and root-supporting ingredients.
• Rinse and follow with a lightweight conditioner or targeted treatment if desired.

Who is this for: oely Biotin Hair Growth & Thickening Shampoo is formulated for men and women seeking a gentler, plant-focused daily shampoo that targets thinning, oil control, and scalp health. It suits all hair types, including color-treated and chemically processed hair, and is ideal for anyone wanting to add strength and visible fullness without harsh sulfates or synthetic additives.