Chemical Damage Guide
Description
How salon chemicals corrode scissor steel and what to do about it. Protect your blades from color, perm solution, and bleach damage with this care guide.
Chemical Damage Guide
Quick look
- Biggest threat: Bleach and perm solution — both cause severe, often irreversible corrosion
- Most common mistake: Leaving scissors on the station during chemical services
- Safe for cleaning: Isopropyl alcohol and scissor-specific oil
- Rule of thumb: If you wouldn’t put it on a razor blade, don’t let it touch your scissors
Chemical safety reference
| Chemical | Japanese | Damage Type | Severity |
|---|---|---|---|
| Bleach | ブリーチ | Corrosion, pitting | SEVERE |
| Perm solution | パーマ液 | Corrosion | SEVERE |
| Hair color | ヘアカラー | Staining, mild corrosion | MODERATE |
| Isopropyl alcohol | — | Safe for cleaning | SAFE |
| Barbicide | — | Mild corrosion risk | MODERATE (brief contact ok) |
| WD-40 | — | Gumming, wrong viscosity | AVOID |
| Kool Lube | — | Chemical residue buildup | AVOID |
| Windex | — | Chemical residue, ammonia | AVOID |
Severe: bleach and perm solution
Bleach (ブリーチ) and perm solution (パーマ液) are the most destructive chemicals that commonly contact professional scissors. Both are highly alkaline and attack the chromium oxide layer that protects stainless steel from corrosion.
Damage pattern: Pitting corrosion appears first along the cutting edge where the protective layer is thinnest. Pitting creates micro-chips that catch hair instead of cutting it. In severe cases, the blade surface develops visible dark spots and roughness that cannot be polished out without significant metal removal.
Prevention: Remove scissors from the station entirely during chemical services. Store them in a closed case in a drawer — not just “off to the side.”
Moderate: hair color and Barbicide
Hair color (ヘアカラー) causes staining and mild surface corrosion with repeated exposure. Brief contact during color cutting is largely unavoidable but should be followed by immediate wiping.
Barbicide and similar salon disinfectants are designed for non-cutting implements (combs, clips). Brief immersion for disinfection is tolerable for most stainless steels, but prolonged soaking accelerates corrosion — especially around the pivot mechanism where moisture gets trapped.
Avoid: WD-40, Kool Lube, Windex
These products are not designed for precision cutting instruments:
- WD-40 is a water displacement spray, not a lubricant. It leaves a gummy residue that attracts debris and creates drag at the pivot.
- Kool Lube (clipper coolant) contains propellants and solvents that leave chemical residue on blade surfaces.
- Windex contains ammonia, which attacks the protective oxide layer on stainless steel.
What to use instead
- Scissor oil: Purpose-formulated for pivot mechanisms. Camellia oil (椿油 / tsubaki-abura) is the traditional Japanese choice — light viscosity, non-gumming, mildly protective.
- Chamois cloth (セーム皮): For wiping blade faces and edges. Softer than microfiber and won’t catch on the cutting edge.
- Isopropyl alcohol: Safe for cleaning blade surfaces. Evaporates cleanly without residue. Follow with oil.
If chemical contact occurs
- Wipe the scissor immediately with a dry cloth
- Clean with isopropyl alcohol to remove chemical residue
- Apply scissor oil to all surfaces, not just the pivot
- Inspect the edge under good light for early signs of pitting
- If pitting is visible, send for professional assessment before continued use
Related links
| Daily Care Protocol (毎日のお手入れ) | Post-Drop Emergency Protocol | Sharpening & Maintenance |
Sources
- Hikari Scissors – Maintenance & Sharpening (Japanese)
- KAMIU – Scissor Care Guide (Japanese)
- Mizutani Canada – FAQ
Verified Sources
- Primary 🇯🇵 Hikari Scissors — Official (manufacturer official)
- Primary Mizutani Scissors — Canada (manufacturer official)
Frequently Asked Questions
Bleach and perm solution are the worst offenders. Both are highly alkaline and attack the chromium oxide layer that protects stainless steel from corrosion, producing pitting along the cutting edge that catches hair instead of shearing it. Hair color is a moderate threat — staining and mild surface corrosion with repeated contact. Brief Barbicide immersion is tolerable; prolonged soaking is not, especially around the pivot where moisture gets trapped.
No. WD-40 is a water displacement spray, not a lubricant — it leaves a gummy residue that attracts debris and creates drag at the pivot. Kool Lube (clipper coolant) is also inappropriate because it contains propellants and solvents that deposit chemical residue on blade surfaces. For cleaning, use isopropyl alcohol and follow with a purpose-formulated scissor oil. Camellia oil (tsubaki-abura) is the traditional choice for the pivot itself.
Act within seconds. Wipe the blade immediately with a dry cloth, then clean all surfaces with isopropyl alcohol to neutralise the chemical residue. Apply scissor oil to both blade faces — not just the pivot — and inspect the edge under strong light for early pitting. If you can see dark spots or feel roughness along the edge, send the scissor for professional assessment before continuing to use it. Pitting worsens rapidly once the protective oxide layer is breached.