The European Scientific Committee on Consumer Safety has opened a new mandate on Glyoxylic Acid, the reducing agent behind most "formaldehyde-free" keratin hair-smoothing systems currently sold in the EU.

The mandate was flagged by regulatory intelligence platform COSlaw.eu, which tracks EU cosmetics dossiers. SCCS mandates are the formal mechanism through which the European Commission requests a scientific safety opinion on a cosmetic ingredient; the resulting opinion feeds Commission decisions on Annex entries, concentration limits and use conditions under Regulation (EC) No 1223/2009.

What the mandate likely addresses

Glyoxylic Acid (INCI: Glyoxylic Acid; CAS 298-12-4) is used in professional straightening products as a reducing agent that breaks disulfide bonds in the hair shaft when activated by heat from a flat iron. Salon-grade formulas typically combine the acid with conditioning polymers and a heated-application step that delivers the smoothing effect.

The committee's assessment is expected to cover:

• Maximum safe concentrations for salon and consumer use
• Heat-activated application scenarios and resulting dermal and inhalation exposure
• Systemic toxicity endpoints, including renal effects flagged in recent clinical reports
• Adequacy of current labelling and instructions-for-use

Why the timing matters

Glyoxylic acid scaled into global salon channels as brands reformulated away from formaldehyde-releasing systems on worker-exposure and consumer-perception grounds. The shift reshaped professional product ranges across the EU, Latin America and North America over the past five years. Outside the EU, Brazil's ANVISA moved first to restrict glyoxylic acid in straightening products following reported clinical cases of acute kidney injury linked to heated application.

The new SCCS mandate brings EU assessment onto the same regulatory trajectory. For brands operating across multiple regions, this signals converging scrutiny: any EU restriction will likely track the substance-level conclusions emerging from regulators in São Paulo, Washington and elsewhere.

What compliance teams should do now

A new mandate does not itself change market access. Existing EU products remain compliant under current rules until the Commission acts on the committee's final opinion. But the mandate is a clear signal that documentation should be tightened now:

• Refresh cosmetic product safety reports (CPSRs) for any glyoxylic-acid-based SKU on the EU market
• Confirm exposure assessments explicitly model heat-activated salon use scenarios
• Audit instructions-for-use wording, glove guidance and ventilation recommendations
• Lock down finished-product concentration data across the supply chain, since any future restriction will be expressed in finished-product percentage
• Map reformulation alternatives by chemistry family, including carbocysteine, thio-esters and bio-based polymer blends

For contract manufacturers, the mandate is also a procurement trigger. Stock reviews and supplier conversations should anticipate potential reformulation windows of six to twelve months once a final opinion is adopted and the Commission amends the relevant annex.

Buyer and treatment-menu implications

Professional buyers and distributors should expect eventual product-line rework. If the SCCS opinion lands with a concentration cap or a heat-application restriction below current salon formulations, brands will need to reformulate or shift to alternative actives. Salon chains operating across the EU will face label and protocol changes that propagate into training, treatment menus and pricing.

Distributors should track label changes carefully when reformulated SKUs re-enter the channel, and prepare client communications in advance for any restriction on heat-activated use.

The next data point to watch

Watch the SCCS plenary agendas for publication of the formal mandate text. That document will be followed by a preliminary opinion, which typically opens a public consultation window. The preliminary opinion is the first substantive technical data point for formulators calculating reformulation budgets, label changes and procurement lead times.