seodata.dev

keyword

sulfate free

Monthly search volume and cost-per-click data for "sulfate free" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=sulfate+free&country=us" +--------------+------------------+ | volume | 1,000 | | cpc | $0.81 | | competition | 0.99 | | country | US | | updated | 2026-05-22 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
shampoo sulfate free 74,000 $1.05 10/20
sulfate free shampoo 74,000 $1.05 10/20
sls free shampoo 5,400 $1.3 10/20
sulphate free shampoo 5,400 $0.97 10/20
shampoo without sulfate 4,400 $1.13 12/20
sulfate free hair products 2,400 $1.38 12/20
sulfate-free hair products 1,600 $1.54 11/20
sulfate-free 1,000 $0.81 20/20
what is sulfate free shampoo 1,000 $0.55 14/20
what is sulfate-free shampoo 480 $0.47 16/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://app.seodata.dev/v1/keyword?q=sulfate+free&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 1,000/month

Full API spec: llms.txt