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Public labels ยท 27 September 2026 ยท No head-to-head trial

Klyyr vs. Hismile.

Quick answer

Klyyr vs Hismile compares a hydroxyapatite-first paste with a whitening-first paste. Hismile PAP+ is built around PAP (phthalimidoperoxycaproic acid), an oxidizing whitener that Hismile markets as peroxide-free. Hydroxyapatite appears after the flavor in its 21-ingredient list, and Hismile does not publish a percentage.

Klyyr One+ publishes a 10% nano + micro hydroxyapatite blend and makes no bleaching claim. Both are fluoride-free and SLS-free. Hismile adds sucralose, a PVM/MA copolymer, and several preservatives in a 63 g tube; One+ uses xylitol and stevia in a 120 g tube.

Smiling person in a light hoodie
Klyyr One+ toothpaste with colorful reflective crystal shapes

Whitening first or hydroxyapatite first

  • 01

    Hismile leads with PAP

    PAP is the whitening agent in PAP+. One+ contains no PAP or peroxide and does not claim to bleach teeth.

  • 02

    The HAp dose is not public

    Hydroxyapatite is listed after the flavor, with no percentage or particle type published. One+ states 10% nano + micro.

  • 03

    Tube size differs a lot

    PAP+ is 63 g (2.2 oz). One+ is 120 g (4.23 oz), nearly twice as much paste.

Topic Official product information Hismile Klyyr One+ One+
Primary purpose Daily whitening with PAP Daily hydroxyapatite toothpaste
Hydroxyapatite Listed; percentage and particle type not published 10% nano + micro, combined
Whitening agent Phthalimidoperoxycaproic acid (PAP) None; no bleaching claim
Fluoride None 0 ppm
SLS None None
Surfactant Sodium lauroyl sarcosinate Sodium cocoyl glutamate
Sweeteners Sucralose, xylitol, sorbitol Sorbitol, xylitol, stevia
Formula length 21 ingredients 16 ingredients
Net contents 63 g / 2.2 oz 120 g / 4.23 oz

Hismile details come from the published PAP+ ingredient list and pack size, reviewed 27 September 2026. Hismile sells other toothpastes with different formulas. One+ facts come from the current Klyyr label.

Sources reviewed

This is a public-label comparison. The linked official pages are the source of truth for each brand, and neither product has been tested against the other in a clinical trial cited here.

  1. Published ingredient list ยท reviewed 27 September 2026

    Hismile facts

    Hismile PAP+ lists phthalimidoperoxycaproic acid (PAP) for whitening and hydroxyapatite later in a 21-ingredient formula, with no hydroxyapatite percentage published. It is fluoride-free and uses sodium lauroyl sarcosinate.

    Read the current Hismile source

  2. Current Klyyr label

    One+ formula facts

    One+ publishes a combined 10% nano + micro hydroxyapatite blend, 16 ingredients, 0 ppm fluoride, no SLS, RDA 62, and a 120 g tube.

    Read the current One+ product page

  3. 50-product label audit ยท August 2026

    Same rules for every brand

    The Klyyr transparency report records a percentage only when a brand or official label states it. Undisclosed values are never filled with retailer guesses.

    Read the audit method and source table

Which one fits your routine?

Hismile may fit if

Your main goal is cosmetic surface whitening and you want a PAP-based paste that fits a Hismile whitening routine.

One+ may fit if

Your main goal is a daily hydroxyapatite toothpaste with the dose on the label and no oxidizing whitener.

Whitening has limits

Surface-stain removal does not change the natural shade of teeth, and it does not change crowns, veneers, or fillings.

The Klyyr One+ formula

One+ is a fluoride-free daily paste with a disclosed 10% nano + micro hydroxyapatite blend, 16 listed ingredients, peppermint + spearmint, no SLS, and no artificial dyes.

  • 01

    10% nano + micro

    One combined 10% hydroxyapatite concentration with both particle-size ranges named on the label.

  • 02

    16 listed ingredients

    Water, Sorbitol, Glycerin, Potassium Sorbate, Hydroxyapatite (nano & micro), Xylitol, Sodium Cocoyl Glutamate, Cellulose Gum, Xanthan Gum, Zinc Citrate, Aloe Vera, Peppermint Oil, Spearmint Leaf Oil, Menthol, Sodium Benzoate, and Stevia.

  • 03

    0 ppm fluoride ยท no SLS

    One+ is fluoride-free, peroxide-free, and made without SLS, titanium dioxide, or artificial dyes.

  • 04

    120 g aluminum tube

    4.23 oz with an HDPE cap. Recycle each component where accepted locally.

In short

Hismile is a whitening paste that includes some hydroxyapatite. One+ is a hydroxyapatite paste with the number on the label. Choose by which job matters more to you.

01 How much hydroxyapatite is in Hismile PAP+?

Hismile does not publish a percentage. Hydroxyapatite is listed after the mint flavor. One+ discloses 10% nano + micro.

02 Is Hismile PAP+ peroxide-free?

Hismile markets it as peroxide-free. Its whitening agent is PAP (phthalimidoperoxycaproic acid), an oxidizing compound. One+ contains neither peroxide nor PAP.

03 Does Hismile contain fluoride?

No. PAP+ is fluoride-free, like One+.

04 Which whitens better, Klyyr or Hismile?

No head-to-head whitening test is cited here. PAP+ is designed around whitening; One+ makes no bleaching claim.

05 Is Hismile SLS-free?

Yes. PAP+ uses sodium lauroyl sarcosinate. One+ uses sodium cocoyl glutamate.

Read the complete FAQ โ†’

ONE+
The hydroxyapatite dose is printed on the label: 10% nano + micro.
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