Skip to Footer
Logo KAREX
Vorderseite der Kinder Karex Zahnpasta-Verpackung (50 ml) mit passender Tube im Vordergrund. Beide zeigen das bunte „KINDER KAREX“-Logo sowie den Text „Zahnpasta mit BioHAP® ohne Fluorid“ und „Biomimetischer Hydroxylapatit“. Auf der Verpackung grüner Hinweis „Bis 6 Jahre“ und „Ohne Fluorid“. Vorteile: „Kariesschutz für Milchzähne“ und „Reduziert das Fluorose-Risiko“. Made in Germany.
Rückseite der Kinder Karex Zahnpasta-Verpackung, 50 ml. Oben das bunte „KINDER KAREX“-Logo mit „Zahnpasta“-Schriftzug. Im blauen Textfeld Produktbeschreibung: Kariesschutz mit BioHAP (biomimetischer Hydroxylapatit), ohne Fluorid. Vorteile: Remineralisierung der Zähne, reduzierte Bakterienanlagerung, fluoridfreie Rezeptur senkt das Fluorose-Risiko, mildes Aroma bei Kindern beliebt.
Seitenansicht der Kinder Karex Zahnpasta-Verpackung, 50 ml, in Weiß und Blau. Oben das bunte „KINDER KAREX“-Logo mit „Zahnpasta“-Schriftzug. Im blauen Feld drei Symbole: ohne Fluorid, ohne Titandioxid, ohne Natriumlaurylsulfat. Darunter die Zutatenliste (Ingredients: Aqua, Hydrated Silica, Glycerin, Sorbitol, Hydroxyapatite, Xylitol, u.a.). Hersteller: Dr. Kurt Wolff, Bielefeld, Deutschland.
Seitenansicht der Kinder Karex Zahnpasta-Verpackung, 50 ml, in Weiß und Blau. Oben das bunte „KINDER KAREX“-Logo mit „Zahnpasta“-Schriftzug. Im blauen Feld der Hinweis „Fluoridfreier Kariesschutz“ und Text mit Verweis auf Informationen und Studien zur Wirksamkeit von BioHAP (biomimetischer Hydroxylapatit) sowie fluoridfreier Zahnpasta auf www.karex.de
Rückseite der Kinder Karex Zahnpasta-Tube, 50 ml, mit blauem Text. Beschreibung: Gesunde Milchzähne sind wichtig, Karex Kinder Zahnpasta bietet Kariesschutz mit BioHAP (biomimetischer Hydroxylapatit), ohne Fluorid. Vorteile: Remineralisierung der Zähne, reduzierte Bakterienanlagerung, fluoridfreie Rezeptur senkt Fluorose-Risiko, mildes Aroma bei Kindern beliebt. Hersteller: Dr. Kurt Wolff, Bielefeld, Deutschland.
Zwei Tuben KINDER KAREX Zahnpasta, Aufschrift: „Zahnpasta mit BioHAP ohne Fluorid. Biomimetischer Hydroxylapatit“.
Drei Tuben KINDER KAREX Zahnpasta, Aufschrift: „Zahnpasta mit BioHAP ohne Fluorid. Biomimetischer Hydroxylapatit“.
Vier Tuben KINDER KAREX Zahnpasta, Aufschrift: „Zahnpasta mit BioHAP ohne Fluorid. Biomimetischer Hydroxylapatit“.

KINDER KAREX toothpaste

Cavity protection for milk teeth

  • Remineralises the teeth
  • Minimises bacterial adhesion
  • Fluoride-free – reduces the risk of fluorosis
  • Mild flavour
€8.98100 ml (€89.80 / 1 l) • incl. VAT, plus shipping

Delivery options

available

Delivery time: 2–4 working days

Free shipping from €15

Aqua, Hydrated Silica, Glycerin, Sorbitol, Hydroxyapatite, Xylitol, Silica, Cellulose Gum, Sodium Methyl Cocoyl Taurate, 1,2-Hexanediol, Caprylyl Glycol, Sodium Cocoyl Glycinate, Sodium Chloride, Aroma, Carvone, Anethole, Menthol, Limonene, Vanillin.

Description: No worries with KINDER KAREX

KINDER KAREX Toothpaste is ideal for the daily brushing of baby teeth: It cleans effectively and provides scientifically confirmed protection against cavities – with "BioHAP" instead of fluoride. This not only reduces the risk of fluorosis from possible fluoride overdose, but is also completely safe if swallowed.

  • BioHAP remineralizes teeth and protects against cavities

  • Without fluoride – reduces the risk of fluorosis

  • Risk-free dosage – safe if swallowed

  • The mild flavor is popular with children

Fluoride Monitor: News from science and the press

  • Higher fluoride levels could lower children’s IQ
  • US court calls for stricter drinking water regulation
  • Critics emphasize data uncertainties and the dental health benefits
  • Reduce fluoride intake during pregnancy

Original article: www.focus.de

  • Kennedy’s influence: As health secretary, Robert F. Kennedy Jr. is strengthening the anti-fluoride movement.
  • Court ruling: A federal judge views fluoride in drinking water as a risk to children’s intelligence.
  • Public opinion: Growing skepticism toward fluoridation due to health concerns.
  • Debate: Fluoridation has historically been seen as a success, but there is now increased discussion about its risks.
  • Health risks: Concern about negative effects on cognitive development.

Original article: www.nytimes.com

  • Kennedy’s influence: Newly appointed health secretary is addressing water fluoridation in the U.S.
  • Fluoridated drinking water: 72% of the U.S. population receive fluoridated drinking water.
  • WHO warning: Long-term exposure to fluoride concentrations above 1.5 mg/L can cause health problems.
  • Cavity protection with risks: Increased fluoride exposure can cause dental enamel fluorosis and skeletal fluorosis.
  • Fluoride during pregnancy: High fluoride exposure during pregnancy may be associated with neurological problems in children.

Original article: edition.cnn.com

  • Fluoridated drinking water: link between high fluoride exposure in drinking water and lower IQ scores in children
  • Low IQ in children: the National Toxicology Program shows that water with more than 1.5 mg/L fluoride is associated with lower IQs in children
  • Dental disease fluorosis: US authorities want to minimize risks such as the dental disease fluorosis, which is caused by too much fluoride
  • Protection of the population: the report raises questions about how people can be protected from high fluoride levels
  • Fluoride during pregnancy: pregnant women are advised to reduce their fluoride intake, as fluoride is associated with potential risks to brain development

Original article: www.theguardian.com

  • IQ report: Fluoride in drinking water can lower children’s IQ.
  • Limits: Problematic from 1.5 mg/L; 0.7 mg/L recommended.
  • Fluoridation: Used since the 1950s for cavity prevention.
  • Natural levels: 0.6% of the U.S. population have water with ≥1.5 mg/L fluoride.
  • 2015 recommendation: Levels lowered to prevent fluorosis.

Original article: www.newsweek.com

A hand holds a toothbrush onto which a stripe of toothpaste is being applied.

Fluoride Facts: What Is Fluoride?

Fluoride is a widely distributed mineral that we absorb through food and water. It is not an essential nutrient; while it protects against cavities, an overdose can quickly lead to fluorosis or other health problems.

Small dried fish, walnuts, and salt on a bright, smooth surface as a symbol of which foods contain fluoride.

How Do You Absorb Fluoride?

Fluoride is omnipresent in our daily livesᑎ: toothpaste, tea, fish with bones, fluoridated salt, seafood, mineral water, grain products.

A scientist in a white lab coat and safety goggles holds a test tube containing white powder, as a symbol of the effects of fluoride on the body.

What Does Fluoride Do to Your Body?

Since 2015, the U.S. National Toxicology Program (NTP) has been investigating the effects of fluoride on neurotoxicity and endocrine disruption. The brain responds sensitively at 1–2 mg/l, the thyroid gland at 2–4 mg/l.ᑎ

A toothbrush and a pea are placed on a bright, smooth surface as a symbol of the fact that fluoride toothpaste should only be applied in a pea-sized or rice grain-sized amount to prevent a fluoride overdose.

Why Is the Correct Dosage Important?

The correct toothpaste dosage not only protects against cavities but also prevents fluoride overdose. The official recommendation for fluoride toothpaste is: pea-sized. Studies show that parents use significantly more toothpaste.ᐳ

A girl looks questioningly into the camera and holds a toothbrush in her hand, as a symbol of the risk-free use of a toothpaste with BioHAP instead of fluoride

Prevention: Without Fluoride – Without Risk

The addition of fluoride in toothpaste is particularly controversial for children under 6 years of age. Children in particular swallow a large portion of their toothpaste.

Risk-free dosage

The uncontrollable swallowing of fluoride toothpaste can be particularly harmful to children. Therefore, the common recommendation is to use a rice grain-sized amount of toothpaste.

An overdose can cause fluorosis.

With KAREX, swallowing toothpaste is no longer a risk. Swallowing the active ingredient BioHAP is completely safe and without risk.

Two girls with healthy teeth; the girl on the left is smiling into the camera; the girl on the right is brushing her teeth with a toothbrush and a fluoride-free toothpaste with BioHAP

Fluorosis Risk

Fluoroses are unsightly white spots on the teeth that are caused by excessive fluoride intake and remain for a lifetime.

While most children's toothpastes contain fluoride, KAREX toothpaste offers a modern alternative with BioHAP. This nature-inspired active ingredient works without fluoride and reduces the risk of fluorosis.

  • Illustration of a tooth in which the tooth crown is represented by a strip of fluoride-free toothpaste with BioHAP

    Active ingredient: BioHAP – the protective shield for teeth

    • Bio for biomimetics (imitating nature) and
    • HAP for Hydroxyapatite (the main component of our teeth and bones).
  • Illustration of a tooth in which the tooth crown is represented by a strip of fluoride-free toothpaste with BioHAP; a blue protective layer and blue hexagons surround the tooth, symbolizing BioHAP’s ability to repair the enamel

    Remineralization

    BioHAP repairs the enamel and remineralizes small lesions evenly down into the underlying layers of the tooth.
    In this way, BioHAP also protects against the development of new cavities.

  • Illustration of a tooth in which the tooth crown is represented by a strip of fluoride-free toothpaste with BioHAP; a blue protective layer surrounds the tooth, symbolizing BioHAP’s ability to protect the enamel from acid attacks

    Protective layer

    The microcrystalline structure of BioHAP forms a protective layer on the tooth surface during dental care.
    Acids and bacteria cannot attack the enamel directly.

  • Illustration of a tooth in which the tooth crown is represented by a strip of fluoride-free toothpaste with BioHAP; a blue protective layer surrounds the tooth and calcium is indicated by blue squares labeled “Ca,” symbolizing BioHAP’s ability to release calcium and thus neutralize the acidic pH value in the oral cavity

    Acid protection

    During bacterial acid attacks, BioHAP releases calcium, which maintains the healthy mineralization of the enamel and reduces the tooth-damaging acidic pH value in the oral cavity.

  • Illustration of a tooth in which the tooth crown is represented by a strip of fluoride-free toothpaste with BioHAP; a blue protective layer surrounds the tooth, keeping bacteria away, symbolizing BioHAP’s effective protection against cavities

    Biofilm control

    The bacteria in the oral cavity are bound by BioHAP and prevented from forming a biofilm on the teeth – but not killed.
    In this way, BioHAP helps to keep the oral flora in its natural balance.

BioHAP is just as effective against cavities as fluoride

  • Clinical study: 291

    studies were identified that investigated BioHAP in the context of dental care.

    BioHAP is just as effective as fluoride in caries prevention.▲

  • Clinical study: 90 %

    caries-free patients while using toothpaste with BioHAP.

    The gel with BioHAP was just as effective in remineralizing caries as the fluoride-containing adult toothpaste (88% caries-free patients).◓

  • Clinical study: 100 %

    of parents use too much fluoride-containing toothpaste for their children.

    The results of the study showed that the average amounts of toothpaste used by parents were significantly higher than the rice grain-sized recommended dose.
    For toothpaste with BioHAP, there are no dosage restrictions.

  • Clinical study: 39.3 %

    of parents are not informed about the conditions of use and warnings of fluoride toothpastes.

    The study shows that parents overdose fluoride-containing toothpastes. This leads to increased fluoride intake, which can result in fluorosis.△

  • Further studies & research findings

Customer Testimonials: Experiences of our satisfied customers

  • “High-quality toothpaste with great ingredients for little ones and adolescents, to introduce them to good dental health with joy and understanding from an early age. I am absolutely convinced and more than satisfied with this product.“

    Cindy F.

  • “How they became our main toothpaste. The kids are totally excited and brush their teeth voluntarily. Before, there were always problems. We are absolutely thrilled!“

    Anne K.

  • “Pleasant toothpaste, without a silly fruit flavor, was immediately accepted by the kids, and mom thinks the ingredients are simply great.“

    Monika W.

  • “Very well received by the kids, as it is mild in taste. I am completely satisfied and have recommended it to my mom friends.“

    Jenny Z.

  • “I am very satisfied with this product and so is my daughter. Great product for kids' teeth.“

    Yvonne R.

  • “My kids love the karex toothpaste and no other one is allowed anymore.“

    Ewelina M.

A hand holds a tube of KINDER KAREX Toothpaste with the inscription "Toothpaste with BioHAP - fluoride-free"

Application: For morning, noon & evening

  • KAREX is the all-in-one toothpaste for clean and well-cared-for teeth
  • Application is easy as can be and suitable for all toothbrushes
  • Also for children who cannot yet spit properly
A hand holds a tube of KINDER KAREX and applies a strip of toothpaste to a toothbrush to illustrate the application of the toothpaste

Frequency & Duration

Brushing teeth with KAREX Toothpaste:

  • 2 x daily for at least 2 minutes
  • Use in the morning and evening & if needed at noon after the meal
  • Re-brushing by an adult is recommended until your child has mastered the brushing technique
A little girl and a boy are brushing their teeth as a symbol of the fact that toothpaste with BioHAP is safe even if swallowed

Toothpaste swallowed? No worries!

Especially young children cannot yet spit out toothpaste properly. Since KAREX Toothpastes are fluoride-free, there is no increased risk of fluorosis even if swallowed.

The active ingredient BioHAP is simply dissolved in the stomach and is safe even if swallowed.

A blue toothbrush lies on a light, smooth surface; in the background, white Hydroxyapatite in powder form is visible; as a symbol of the fact that KAREX Toothpaste contains only necessary ingredients and no titanium dioxide or sodium lauryl sulfate

Only as many ingredients as necessary

Furthermore, special care was taken during the development of our toothpaste to use only necessary ingredients. Therefore, we deliberately avoid the use of sodium lauryl sulfate and titanium dioxide, for example.

FAQ: Answers to your questions

The use of fluoride in toothpaste is particularly controversial for children under 6 years of age. Children in particular swallow a large portion of the toothpaste.

Due to the intake of additional sources of fluoride (vitamin D supplements with fluoride, fluoridated salt, etc.), the risk of developing fluorosis (white spots on the teeth caused by increased fluoride intake) increases significantly. For example, the German Federal Institute for Risk Assessment points out that if a children’s toothpaste with 500 ppm fluoride is swallowed, just as much fluoride is ingested as, for instance, through fluoridated salt.

According to the new recommendations, the amount of swallowed fluoride can therefore double. The risk of fluorosis is significantly higher with toothpastes that have a higher fluoride content (from 1000 ppm).

KAREX relies on the tooth-related active ingredient Hydroxyapatite (BioHAP) in all products. When swallowed, it is simply dissolved in the stomach. Numerous studies confirm its effectiveness: Hydroxyapatite repairs enamel with every brushing, reduces bacterial adhesion, and thus provides effective protection against cavities.

Our tooth enamel consists almost entirely of Hydroxyapatite. That is why BioHAP (biomimetic Hydroxyapatite) is used as an active ingredient in oral care. The highly concentrated active ingredient also serves as a source of calcium and protects our teeth against bacterial acids. Numerous studies confirm the benefits of Hydroxyapatite in the field of oral care and prevention.

Numerous publications confirm the effectiveness of BioHAP in dental care. These include not only laboratory studies (in vitro) but also studies with test specimens under oral cavity conditions (in situ), as well as, in particular, clinical studies on patients (in vivo).
For more information, feel free to read the German short summary or the original study. You can get an overview of the large number of studies on Hydroxyapatite as an active ingredient in dental care by browsing our study database (usable without registration).

KINDER KAREX is suitable for babies from the first tooth. Thanks to the tooth-related active ingredient Hydroxyapatite (BioHAP), the toothpaste is suitable for all young children from 0 years of age who are not yet able to spit properly. Babies and young children can effectively protect their teeth against cavities with KINDER KAREX. The flavor has been chosen by children for children.

More Products

Zwei Tuben KAREX Zahnschutzgel, Aufschrift: „Zahnschutzgel mit BioHAP ohne Fluorid. Biomimetischer Hydroxylapatit“.

KAREX tooth protection gel

2-pack

€17.98100 ml (€179.80 / 1 l) • incl. VAT, plus shipping
Zwei Tuben JUNIOR KAREX Zahnpasta, Aufschrift: „Zahnpasta mit BioHAP ohne Fluorid. Biomimetischer Hydroxylapatit“.

JUNIOR KAREX toothpaste

2-pack

€9.98130 ml (€76.77 / 1 l) • incl. VAT, plus shipping

▲ Limeback, H., Enax, J. & Meyer, F. (2021): Biomimetic hydroxyapatite and caries prevention: a systematic review and meta-analysis. Can J Dent Hyg. 2021 Oct 1;55(3):148–159.

◓ Amaechi, B.T., AbdulAzees, P.A., Okoye, L.O. et al. (2020) Comparison of hydroxyapatite and fluoride oral care gels for remineralization of initial caries: a pH-cycling study. BDJ Open 6, 98-159

△ Sudradjat, H., Meyer, F., Fandrich, P. et al. (2024): Doses of fluoride toothpaste for children up to 24 months. BDJ Open 10, 7