SkinClash · iPhone
Two good products can still be a bad routine.
Retinol and acids. Vitamin C and certain actives. Benzoyl peroxide and half the shelf. SkinClash takes two products, reads what is actually in them, and tells you whether they belong together, belong at opposite ends of the day, or do not belong in the same routine at all.
Guest mode included. Three checks a day with no account, nothing leaves your device.
How it works
A clash check in three steps.
Add two products
Pick what you are already using, or what you are considering buying. The check works on the actives, not the marketing.
See the verdict
Safe together, separate by time of day, or do not combine. Each verdict comes with the reason, not just the answer.
Fix the order
Most clashes are timing problems, not throw-it-out problems. You usually keep both products and change when you use them.
Plans
Start free. Upgrade when you are checking a whole shelf.
| Guest | Free account | Premium | |
|---|---|---|---|
| Clash checks | 3 a day | 5 a day | Unlimited |
| Exports | 1 | 1 | Unlimited |
| Ingredient lookups | Included | Included | Included |
| Account required | No | Yes | Yes |
Guest mode keeps everything on your device. Creating a free account raises the daily limit and lets your saved checks follow you to a new phone.
Pricing is confirmed at purchase inside the app, where Apple shows the exact local price and renewal terms before you confirm. Subscriptions renew automatically unless cancelled at least 24 hours before the period ends, and are managed in your App Store account settings.
Why it exists
The internet gives contradictory answers about layering.
Ask whether you can use retinol with an exfoliating acid and you will get a confident yes, a confident no, and a long thread arguing about pH. The underlying chemistry is not actually in dispute. What is missing is a tool that applies it to the two specific products in your hand.
What it will not do
SkinClash does not diagnose, treat, prevent, or cure any condition, and it does not replace a dermatologist. It reports known interactions between cosmetic ingredients. If a product is causing a reaction, stop using it and speak to a professional.