Hair RestorationResearch Use Only

Strengthening Leave-In Treatment

£1.00
COA Available Batch Documented Research Grade
5.0 · Verified purchasers

“The documentation quality is exceptional — batch-specific COA, clearly formatted and immediately accessible. Exactly what serious research sourcing requires.”

D
Dr. A. Whitfield Cellular Biology Researcher, UCL

“Cold-chain packaging arrived intact, labelling is precise and the purity matched the COA exactly. Eira sets a new standard in this category.”

M
M. Okafor Postdoctoral Researcher

“Traceable batches, accessible documentation, a supplier you can communicate with. Eira is the standard I now measure all others against.”

L
L. Carmichael Independent Research Consultant

A daily leave-in treatment that builds cumulative strength and resilience in fine, fragile and breakage-prone hair. Hydrolysed wheat protein, silk amino acids and panthenol coat and reinforce each strand without weight, leaving hair smoother, more manageable and significantly less prone to mechanical damage.

Apply to damp hair from mid-lengths to ends and style as usual. Lightweight enough for fine hair. Provides immediate smoothing and detangling while building structural integrity with continued use.

Dermatologist tested. Suitable for fine and damaged hair.

This product is supplied for research purposes only and is not intended for human consumption, medical use, or any other non-research application.

All compounds are research-grade and supplied with available batch documentation.

Storage: Store at −20°C for long-term stability. Stable at 4°C for short-term use.

Handling: For research use only. Handle under appropriate laboratory conditions.

Cold-chain: All Eira compounds are stored and shipped under cold-chain conditions to preserve integrity.

Certificate of Analysis

Batch-specific documentation is available for this compound. COA access confirms compound identity, purity and batch traceability.

Request COA

Eira London products are supplied for research purposes only. Not intended for human consumption, medical use, diagnosis, treatment, prevention or cure of any disease.