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Eyelash and Eyebrow Loss After Chemotherapy: What You Need to Know
Questions answered by an expert about eyelash and eyebrow regrowth after chemotherapy
Dr Tom Walker
September 10, 2025
Dr Tom Walker, MBChB, is a UK-trained medical doctor and co-founder of Opti Laboratories, the successor to Mylash, which he founded in 2007. He graduated from the University of Glasgow, where he studied both medicine and anatomy, and has spent over 15 years specialising in the science of eyelash and eyebrow growth.
Dr Walker’s work focuses on evidence-based treatments for eyelash and eyebrow hypotrichosis, including cosmetic concerns and regrowth following medical conditions such as chemotherapy, radiotherapy, thyroid disease, and trichotillomania. He has Mylash and Opti Laboratories to oversee the care of thousands of patients using prescription-only and clinically supported treatments, working exclusively with UK-registered doctors and pharmacies.
His commentary and work have been featured in national and international publications including The Times and Vogue, and he is recognised for bridging clinical evidence with practical, patient-centred outcomes. Dr Walker remains closely involved in treatment development, safety review, and patient education, with a particular interest in long-term results and innovation.
Dr Walker authors many and medically reviews all educational content published by Opti Laboratories relating to eyelash and eyebrow health, including articles on chemotherapy recovery, treatments, and the latest scientific papers.
Questions answered by an expert about eyelash and eyebrow regrowth after chemotherapy
Our hair and lashes suffer as much in the sun as our skin. So what damage can it do and how do you combat it?
Can eyelashes regrow after trichotillomania?
Yes, eyelashes and eyebrows can often regrow once hair-pulling behaviour is under control, as the follicles usually remain intact. Cosmetic serums, such as those from Opti Laboratories, may support regrowth — but they are supportive, not curative, and must be used alongside behavioural therapy.
At Opti Labs, we hear from many clients that want to regrow their eyebrows due to thyroid problems. Here we discuss the various options to help sparse eyebrows caused by hypothyroidism or low thyroid levels.
What is the science behind the daily application of Opti Labs Growth Treatment?
A study has shown that bimatoprost, known by the brand name Opti Labs Growth Treatment in the UK, can contribute to faster than normal eyelash regrowth following chemotherapy.
What is the difference between Opti Laboratories growth treatment, Latisse and Lumigan? Our doctors break it down.
Not all eyelash growth treatments and eyelash serums have the same ingredients, and some have been tested to a higher standard than others. So are all eyelash growth treatments safe?
At Opti Labs, we’re often asked how long to wait after having blepharoplasty or eyelid surgery before you can start using our growth treatment. Read our doctors’ guide to getting started.