Hey Product Hunt 👋 What inspired this: I kept noticing the same thing across every skincare app I tried, they were all confident about things they couldn't actually know. A face scan hands you a score. An ingredient scanner hands you a risk percentage. None of it is measuring anything real, it's a guess wearing the costume of a diagnosis. The problem: Skin changes slowly. You try something new, and if your skin reacts, it's usually weeks later, by which point you've forgotten what you started, when, or what else changed alongside it. The information you'd need to actually understand your own skin exists for about ten days in your memory and then it's gone. How the approach evolved: I started out building something closer to what's already out there, an app that would try to tell you what caused a reaction. The more I worked on it, the less honest that felt. There's no way to know that from a log. So the product became something narrower and, I think, more useful: a plain timeline. What you used, what you changed, what followed. When something happens, it shows you what was closest in time and says clearly what that can and can't prove. It doesn't diagnose. It remembers, accurately, so you can do the thinking yourself. One thing I held onto through every version: if someone's answers point to something urgent, the app stops completely and tells them to get real help. That screen doesn't have a dismiss button. It felt like the one place software should get out of the way. Would love to hear if this resonates, especially from anyone who's been let down by an app that was more confident than it had any right to be.

Skin Memory

A skincare journal that remembers what changed.

A skincare journal that remembers what changed.