Methodology

This page explains how K-Beauty Vibe collects and displays ranking data.

Rankings are collected separately, per platform

Olive Young Korea, Hwahae, Amazon, Daiso, and Musinsa expose different
market or review signals. K-Beauty Vibe does not combine them into a single
“overall rank.” Olive Young Global is handled separately as a storefront
signal for price, rating, review count, and availability.

Amazon rankings specifically

Amazon doesn’t publish a Korean-beauty-only category. What’s shown as
“Amazon” here comes from a search for Korean beauty products within Amazon’s
Beauty department, in the order Amazon’s own search returns them – this is
not the same thing as Amazon’s official Best Sellers Rank for a category,
and we don’t relabel it as one.

Matching the same product across platforms

When the same real product appears on more than one platform, we match it
by brand, product name, and (where stated) volume, and show its position on
every platform it was matched on under “Rankings Across Platforms” on that
product’s page. Matches require a high similarity threshold; if a product
doesn’t confidently match anything, it’s shown only under the platform it
was found on.

Availability

A product is marked available outside Korea only when we have direct
evidence of that – either it was found on a global-region source itself, or
matched to one. We do not guess. Where that evidence doesn’t exist, the
product is simply not marked either way rather than assumed unavailable.

What we don’t estimate

If a rank, rating, price, or availability figure isn’t confirmed by a
source, it is left blank rather than filled in with an estimate.

Automated collection, manual review

Ranking data is collected automatically on a scheduled basis. Category
matching and cross-platform product matching are done with rule-based logic
that we periodically check by hand for false matches, rather than left
entirely unsupervised.

Independence

K-Beauty Vibe is an independent ranking comparison site and is not
affiliated with, endorsed by, or an official partner of Olive Young, Hwahae,
Amazon, Daiso, Musinsa, or Sephora. Platform names are used for identification
only.