Greenlens

Every rating source on one cosmetic, and where they disagree.

Is this safe for you? Greenlens shows what every public rater says, names who funds each opinion, and gives you one score whose weighting you control, never a blended number that hides the conflict.

Why this exists

We built Greenlens after noticing something annoying: the same moisturizer can be “clean” in one app and “concerning” in another, and neither tells you why. Both are right, in their own way, but they just measure different things and get paid by different people. So instead of picking a winner, we put every opinion on one page and let you decide whose to trust.

Try one of these

What makes it honest

Disagreement stays visible

When EWG says "concern" and Yuka says "clean," we show the spread and name both instead of averaging them into silence.

Who pays is always shown

Every rating carries its funding model (nonprofit, ad-supported, subscription) so you can weigh the source, not just the score.

You own the weighting

Safety, environment, labor, packaging: slide them to what you care about. Computed live, never stored.

On desktop

Browser extension · Chrome

A verdict while you shop

Drops a Sonion card onto product pages as you browse. Tap for the spread, click through for the full breakdown on ingredients and rater disagreements.

Add to ChromeFree on the Chrome Web Store

Add the extension

Greenlens is on the Chrome Web Store. One click, and product pages start carrying a verdict.

Get it on the Chrome Web Store

Or build from source

  1. 1npm run ext:build

    Build the extension into dist/extension.

  2. 2chrome://extensions

    Open it and turn on Developer mode (top right).

  3. 3Load unpacked

    Select the dist/extension folder. Open an Amazon product page.

Greenlens Pro is coming

Your shelf synced across devices, watchlists for the ingredients you avoid, and an alert when a rater changes its mind about something you own. Greenlens works without an account, and that stays true. An account is optional and only adds sync.

One email when Pro launches. No account required, no spam, delete anytime.

Cosmetics only · lead with safety

Built around one rule: never hide a disagreement behind a single number.

As an Amazon Associate, Greenlens earns from qualifying purchases.

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