Lash Map Lab is a free, no-sign-up browser tool for planning DIY cluster lash placement. It turns eye shape, preferred style, available lash lengths, and clusters per eye into an editable inner-to-outer map. Users can adjust the guide, review practical fit notes, then download or share it. The tool does not require a photo upload and is intended as a planning aid rather than professional or medical advice.

While reviewing how people plan DIY cluster lashes, I found that most guides were static images and required users to mentally translate a style into the lengths they actually owned. I built Lash Map Lab to make that planning step editable and private, without asking for a photo or account.