Sealing Rinse is for anyone who wants a fast, in-shower smoothing step right after shampooing — particularly useful before a same-day blowout or flat iron, since it works in seconds rather than minutes. It suits all hair types and is color-safe, so it doesn't require checking compatibility with color-treated hair.

It's the quickest step in the Smooth routine: where Sealing Mask is a weekly deeper treatment, Sealing Rinse is built for more frequent use (up to three times a week) when a person wants a smoother result without adding real time to their shower.

Sealing Rinse solves a specific problem — needing a smoother result without adding a multi-minute mask step to a shower routine. At 10 to 15 seconds of contact time, it's built to be used far more often than a mask, which is why the brand recommends it up to three times a week rather than once or twice.

It's also positioned for immediacy: rather than building results over repeated washes, the brand's own testing claims are based on a single use, which is the main thing that separates it from the rest of the Smooth lineup.

• Use 1-3 times per week, or whenever immediate smoothness is desired
• After shampooing, squeeze out excess water
• Apply starting at the ends and work upward, massaging or combing through
• Let sit 10-15 seconds — a slight warming sensation is normal
• Rinse well; follow with Super Smooth Conditioner if desired

• Pro: works in 10-15 seconds, faster than almost any other deep-treatment step
• Pro: brand testing reports smoother, sealed cuticle and shinier hair after just one use
• Pro: color-safe, so it fits into a color-treated hair routine without extra research
• Con: contains Methylchloroisothiazolinone and Methylisothiazolinone as preservatives, ingredients some people with sensitive skin or scalp choose to avoid
• Con: the warming sensation during use can be unexpected for first-time users if they aren't told to expect it
• Con: results are from a single use in brand testing and are not described as cumulative, so it needs repeat use to maintain the effect