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FORMAMIDOPROPYL BETAINE.

Valuable CAS 120128-90-7 / SKIN CONDITIONING

Formamidopropyl Betaine functions as an amphoteric surfactant, primarily contributing mild cleansing and effective foaming properties to cosmetic formulations. It aids in emulsifying oil and dirt for rinse-off, while generally, betaines are recognized for their cellular hydration support and skin-soothing benefits.

Cleansing Agent Foaming Agent Emulsifying Agent Foam Stabilizer Viscosity Enhancer Anti-Irritant (inferred from general betaine properties) Anti-Inflammatory (inferred from general betaine properties) Skin Barrier Support (inferred from general betaine properties)

Science

As an amphoteric surfactant, Formamidopropyl Betaine facilitates the mixing of water with oil and impurities, enabling effective cleansing and rinsing. It enhances foam generation and stability, improving product texture and viscosity. Broader betaine family characteristics, typically attributed to their osmolyte action, include helping cells maintain water balance, protecting proteins from denaturation, and offering anti-irritation and anti-inflammatory support, potentially bolstering skin barrier integrity through tight junction promotion. These benefits are largely extrapolated from the general betaine class.


Research

Low confidence
Effective range 1–10%
Optimal

N/A

Key findings

  1. 01 In formulations containing Cocamidopropyl Betaine and related amidopropyl betaines, concentrations up to 6% are considered safe for leave-on products.
  2. 02 In formulations containing Cocamidopropyl Betaine and related amidopropyl betaines, concentrations up to 30% are considered safe for rinse-off products.
  3. 03 Cocamidopropyl Betaine is typically utilized at 2-5% in facial cleansers for gentle daily cleansing.
  4. 04 Cocamidopropyl Betaine is incorporated at 3-8% in body washes to balance cleansing efficacy with skin mildness.
  5. 05 Cocamidopropyl Betaine is employed at 5-10% in shampoo formulations for optimal foam generation and conditioning.
  6. 06 Cocamidopropyl Betaine demonstrates limited usage at 1-3% in baby care products due to heightened sensitive skin considerations.

Transparency

Not commonly dusted

Information regarding dusting practices specific to Formamidopropyl Betaine is not available in the provided research data.


The Formula

Solubility
Water
Optimal pH 5.5 – 7.5
0 7 14

Stability

Betaines are generally stable. Formulations containing Cocamidopropyl Betaine, a related amidopropyl betaine, typically show optimal skin compatibility and stability within a pH range of 5.5-7.5. Cocamidopropyl Betaine is stable but incompatible with strong oxidizing agents, an attribute likely shared by Formamidopropyl Betaine.

Conflicts

  • Strong oxidizing agents (inferred from Cocamidopropyl Betaine).
  • Cationic ingredients may necessitate careful pH adjustment to prevent incompatibility reactions (inferred from Cocamidopropyl Betaine).

Safety

CIR Status
Safe with restrictions
Sensitization risk Moderate

The Cosmetic Ingredient Review (CIR) Expert Panel concluded that cocamidopropyl betaine and related amidopropyl betaines, including Formamidopropyl Betaine, are safe for cosmetic use provided they are formulated to be non-sensitizing. While specific toxicological data for Formamidopropyl Betaine is limited, related compounds like Cocamidopropyl Betaine have been observed to induce mild skin irritation, eye irritation, and skin sensitization if not properly formulated. Maximum safe concentrations for related amidopropyl betaines are up to 6% in leave-on products and up to 30% in rinse-off products. No specific SCCS or FDA cosmetic status was found for Formamidopropyl Betaine itself; however, FDA has approved Betaine hydrochloride (oral) for homocystinuria.


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Moderate
Comedogenicity Unknown

Our Assessment

Valuable

Formamidopropyl Betaine is a valuable amphoteric surfactant, inferring mild cleansing, foaming, and potential skin-soothing benefits from its classification within the amidopropyl betaine family, though careful formulation is essential to ensure non-sensitizing properties.


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