Syncly Social Index
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Hair
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K18 vs Redken on video, September 2026
K18 had nearly twice Redken's September videos (757 vs 393) and scored 61.9 vs 28.3 on the Syncly Social Index. Only 43 videos named both. In the 40 we read, 8 praised both, 1 leaned K18 and 2 doubted both.
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Side by side
K18 ranked 3rd in hair and Redken 10th. K18 led on share of voice (55.6 vs 11.1), momentum (33.3 vs 0; share up 10.8% from August while Redken fell 13.9%), sentiment (50 vs 0; 37.1% vs 28.8% organic positive), high reach (44.4 vs 22.2) and creator breadth (88.9 vs 22.2). Both scored 100 on untagged reach (21.2% vs 27.3% of sampled videos named the brand without tagging it). The Syncly Social Index measures attention and reaction in social video and does not test how well a product works.
Syncly Social Index metrics, September 2026. The higher value in each row is bold.
| K18 | Redken | |
|---|---|---|
| SSI score | 61.9 | 28.3 |
| Videos (month) | 757 | 393 |
| Change in share vs. last month | +11% | −14% |
| Untagged mentions | 21% | 27% |
| Positive (organic videos) | 37% | 29% |
| Videos with 100k+ views | 3.7% | 3.3% |
| Creator breadth | 95% | 92% |
When creators compare them
Most of the 43 overlap videos are routines or hauls; 29 of the 40 we read gave no verdict. 8 praised both: One creator says K18 and a Redken duo are "worth investing" in for damage and frizz, itsxkelseymarie credits the K18 mask and Redken leave-in for her recovery, and mattrandon likes the K18 heat protectant for high heat and calls Redken's "chef's kiss". A budget/basic/best video put Redken Acidic Bonding Concentrate as the "basic" damaged-hair pick and K18 as "best". Two doubted both: The World Of Craig questions whether bond products repair bonds, and rachelhaneats won't rebuy the K18 Peptide Prep (price) or the Redken Acidic mask.
Which one creators prefer in videos that mention both
Videos that compare them
Which one to choose
Choose K18 if you want what these creators use it for: a repair mask for damaged hair (miosotismomlife__, itsxkelseymarie) or the Peptide Prep detox shampoo (allybt_). Choose Redken if you want the Acidic Bonding shampoo as a routine base (allybt_), frizz control (Redken duo) or a light heat protectant (mattrandon). One creator won't rebuy either.
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Frequently asked questions
Benchmark your brand against competitors
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.