
Health officials have warned against glyoxylic acid hair-straightening products, especially when used with high heat and scalp contact. Learn why hair recovery is safer—and how Spino Rice Hair Mask helps damaged hair regain health, manageability, and shine.
Health authorities in France and other countries have advised against using hair-straightening products that contain glyoxylic acid. In many markets, these are not fully banned yet—so they may still be available, including online. The concern is not cosmetic irritation. It is a potential link to acute kidney injury after certain straightening procedures.
How glyoxylic acid straightening works
Glyoxylic acid is used in some straightening systems because it can temporarily alter keratin in the hair, changing how the hair behaves (curly, wavy, or straight). The treatment typically relies on a hair iron and high heat to force the hair into a smoother shape and “set” the result.
Why the risk increases during straightening
The risk rises because these treatments combine two critical factors: higher exposure and high heat. If the product touches the scalp during application, the scalp can act as a pathway for absorption. Heat from the iron, together with higher concentrations used in some treatments, may increase irritation and raise the likelihood of the chemical entering the body.
What happens in the body: the oxalate pathway
Once glyoxylic acid reaches the bloodstream, the body tries to break it down. It can be converted into oxalate.
Oxalate is usually removed through urine. But if there is too much oxalate, it can form calcium oxalate crystals. These tiny crystals can damage kidney tissue quickly, which is why the concern is acute kidney stress—not a minor side effect.
Why “formaldehyde-free” is not enough
Some treatments are marketed as “formaldehyde-free,” but that label does not automatically mean “risk-free.” The current concern is different: glyoxylic acid exposure under high heat, potentially followed by systemic conversion into oxalate and crystal-related kidney injury.
A safer direction: hair health over forced straightness
Many people consider straightening because their hair feels dry, frizzy, dull, or difficult to manage. But damaged hair does not need aggressive chemistry to look better. It needs recovery—restoring softness, flexibility, and shine so the hair becomes naturally easier to style.
Spino Rice Hair Mask: a safe treatment for damaged hair
This is exactly where our Rice Hair Mask fits. It is a safe, hair-health-first treatment designed to help damaged hair regain the look and feel people are really trying to achieve—without exposing the scalp and body to harsh straightening chemicals.
What it supports, consistently and safely:
Softness and smoother feel without forcing structural change
Healthier-looking shine that comes from improved hair texture
Better manageability over time, especially for weak, stressed strands
Reduced breakage risk by supporting the hair’s condition instead of “masking” damage with extreme procedures
The goal is not a dramatic overnight transformation at any cost. The goal is steady improvement: healthier hair that looks shinier, feels softer, and becomes easier to style because it is recovering.
Closing outlook
As regulators debate restrictions, availability is not a guarantee of safety. If a straightening product contains glyoxylic acid—especially when used with high heat and with potential scalp contact—it deserves serious caution. A smarter long-term strategy is to invest in hair recovery rather than risky smoothing shortcuts: treat damage, rebuild hair quality, and let healthy hair do what it naturally does best—shine.
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