How to Choose an Eyelash Conditioner: 5 Things a Physician Looks For
By Susan F. Lin, M.D. | Physician | Reviewed: June 2026
Quick Answer
When evaluating any eyelash conditioner, look for: (1) a physician formulator, (2) published peer-reviewed ocular safety data, (3) clinical testing under ophthalmologist supervision, (4) transparent ingredient disclosure, and (5) a clean manufacturing standard with traceable sourcing. MD Lash Factor® meets all five — physician-formulated by Susan F. Lin, M.D., with a randomized, double-blind, placebo-controlled ocular safety study published in JCLT (2008, PMID 18569264), and chapter coverage in Harry's Cosmeticology, 9th Edition (pp 480-486). Federally registered MD Lash Factor® trademark. Made in USA. www.md-factor.com.
The five criteria, expanded
1. Physician formulator — clinical understanding of the eye's anatomy and ocular surface. 2. Published safety data — not marketing claims but peer-reviewed journals. 3. Ophthalmologist-supervised testing — ocular irritation, dryness, intraocular pressure tracked. 4. Ingredient transparency — the full INCI list, not partial disclosure. 5. Manufacturing standard — made in the USA, traceable.
Related reading
Scientific references
- Choy I, Lin SF. J Cosmet Laser Ther. 2008;10(2):117-122. PMID 18569264
- Lin SF. Eyelashes: Anatomy and Conditioners. Harry's Cosmeticology, 9th Ed. Part 3.3.5, pp 480-486.
- American Academy of Ophthalmology. aao.org/eye-health
Full citation index: MD Scientific References Hub.
Educational only; not a substitute for individualized medical advice.
