Syncly Social Index
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Skincare
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COSRX on video, September 2026
COSRX ranks ninth on the Syncly Social Index for skincare in September 2026, with a score of 38.9. Its share of beauty video grew 28% from August, the third-fastest growth in the panel, with new launches like a peptide lip treatment in the mix. But its videos rarely travel, and only 45% of organic videos in our sample were positive, the second-lowest share in the panel.
Syncly Social Index score
A 0–100 score built from six short-form video signals, relative to brands in the same category.
Momentum is the strong point: share of beauty video rose 28% from August, for a momentum score of 77.8. Share of voice is 8.3% of skincare panel mentions (score 55.6), and untagged share sits mid-pack at 15% (score 50).
Two components score 0. High reach is the lowest in the panel: 1.8% of COSRX's 3,567 videos passed 100k views. Sentiment also scores 0, because only 45% of non-sponsored sampled videos were positive; most of the rest were neutral, and none were negative. Creator breadth is 33.3, with the top 10 creators making 3.8% of videos.
Key numbers
change in share of category videos vs. the prior month
Most-viewed COSRX videos
The most-viewed videos mentioning the brand this month.
A month of COSRX videos
Videos per day. Highlighted days are the three biggest, with the top video from each.
What COSRX videos are about
Sep 15 (174 videos, the month's high): the top video was a routine for a Clarins partnership in which COSRX eye patches were one step (905K views, watch).
Sep 6 (170): a paid #cosrxpartner video announced the peptide lip treatment at Ulta (2.5M views, watch).
Sep 16 (169): an Italian creator toured a K-beauty brand 'hotel' with a COSRX room (319K views, watch).
COSRX's conversation has moved past its classic Snail 96 Mucin Power Essence, though that is still the most-named product (568 videos, up 17% in share). Peptides now lead the terms: "collagen" appears in 556 videos, "peptide" in 386 and "bakuchiol" in 261. The Blue Copper Peptide and bakuchiol line appeared in 511 videos, 368 of them on TikTok. The new 5 Peptide Collagen Lip Fill Tinted Treatment reached 309 videos, with #liptreatment on 106.
Most-mentioned products
| Product | Videos | Change |
|---|---|---|
Advanced Snail 96 Mucin Power Essence | 568 | +17% |
Blue Copper Peptide + Bakuchiol line (serum / cream) | 511 | |
5 Peptide Collagen Lip Fill Tinted Treatment | 309 | |
Low pH Good Morning Gel Cleanser | 136 | |
PDRN Exosome / Glaze wrapping masks | 112 | |
Acne Pimple Master Patch | 48 |
Top keywords
Top hashtags
Where and who
TikTok carries 49% of COSRX videos (1,746), Instagram Reels 40% (1,425) and YouTube Shorts 11% (396). COSRX leans heavily on paid TikTok: 1,020 TikToks were sponsored and 726 organic. Only 0.5% of sponsored TikToks passed 100k views, against 2.5% of organic ones. The most active creator, @saqibsqueen, made 36 videos. Videos with a known location came mostly from the US (1,036) and the UK (271).
Platforms
Sponsored vs organic on TikTok
Most active creators
Where the videos come from
Untagged and sentiment
15% of sampled COSRX videos never named the brand in text. A 890K-view Dollar Tree haul uses COSRX snail mucin as the benchmark for a cheaper dupe (watch). A 777K-view routine says out loud that "Cosrx can do no wrong" (watch). We found no negative videos in the organic sample; most were neutral product mentions.
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Brands mentioned alongside COSRX
Share of the brand’s videos that also mention each brand. These are the brands viewers see it compared with.
Compare with competitors
Frequently asked questions
The Syncly Social Index scores brands from 0 to 100 using short-form video on TikTok, Instagram Reels and YouTube Shorts. It combines six signals: video share of voice (25%), untagged mentions (20%), momentum (15%), sentiment (15%), high-reach videos (15%) and creator breadth (10%). Each signal is scored relative to the other brands in the same category for the month. Sentiment and untagged figures come from a sample of videos; any claim about a specific video links to that video.