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Soft99 Glaco Roll On Large
Priced as of May 12, 2026
4.5(3,041 ratings)Buy on AmazonSaved to your guest loadout. Sign up to also save to your Cabinet (consumables) or Kit (tools you own).
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Prices may varyFrom the Safety Data Sheet
Full SDS ↗ (rev. 2018-10-08)GHS hazard codes are quoted from the manufacturer’s Safety Data Sheet. PPE tiers below translate those codes and the listed ingredient chemistry; they are not CarCareTruth recommendations.
EyesSituationalMfr. SDS §8 · 29 CFR 1910.133(a)(1) · GHS H319SkinSituationalMfr. SDS §8LungsSituationalMfr. SDS §8Ventilation—No PPE in published sourcesShow details for all categories ▾Hide details ▴
From the manufacturer’s Safety Data Sheet, Section 8
“H319 (eye irritation Cat 2) present in SDS §2. The roll-on felt applicator reduces mist exposure compared to spray-on products; eye irritation risk is from spill or applicator contact. DANGER signal word is from H225 flammability, not H318 — no forcing to required.”
— Soft99
U.S. regulatory standard
29 CFR 1910.133(a)(1)
“The employer shall ensure that each affected employee uses appropriate eye or face protection when exposed to eye or face hazards from… liquid chemicals…”
ANSI Z87.1 (incorporated via §1910.6)
OSHA standards apply to workplaces. Cited here as the U.S. reference threshold for the underlying hazard class.
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
From the manufacturer’s Safety Data Sheet, Section 8
“SDS §8 specifies vinyl gloves. No H315/H317/H314 at mixture level in SDS §2 — glove instruction is a precautionary label requirement at these concentrations. High IPA carrier warrants gloves for extended application sessions.”
— Soft99
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
From the manufacturer’s Safety Data Sheet, Section 8
“H336 (CNS narcosis) from high IPA concentration — very high VOC (~630–780 g/L estimated) creates inhalation risk in a closed garage. SDS §7 specifies 'Use only outdoors or in a well-ventilated area.' Outdoors or with garage door open, vapor accumulation is negligible.”
— Soft99
CarCareTruth publishes the cited sources verbatim and does not advise what action a user should take. Consult the full SDS before use.
The published Safety Data Sheet for this product does not specify ventilation protection for consumer use.
Workplace context
29 CFR 1910.134(a); 1910.1000
“the primary objective shall be to prevent atmospheric contamination [via] accepted engineering control measures (for example, enclosure or confinement of the operation, general and local ventilation…).”
Triggered by GHS H336 on the SDS.
OSHA standards apply to workplaces. Cited here as the U.S. reference threshold for the underlying hazard class.
PPE tiers translate the manufacturer’s SDS and U.S. regulatory standards. Not professional safety advice. How we report safety.
CarCareTruth's Analysis
Last reviewed May 15, 2026
TL;DR Durability is 6–10 weeks on a daily driver — the label's 12-month claim is a best-case outlier — and highway sheeting is strong enough that most drivers can cut wipers at speed. The integrated felt applicator makes application genuinely forgiving compared to spray-on alternatives.
What it is and how it performs
Glaco Roll On leaves a hydrophobic silicone film that beads rain and sheets it off glass at highway speed. The integrated felt applicator is the defining feature: press the bottle on clean glass, squeeze gently, and roll across the surface. The 5–10 minute drying window is forgiving and even coverage from the felt eliminates the hazing risk common in spray-on repellents. Car Magazine confirms wiper-free driving in rain at speed. Community reports cluster around 6–10 weeks of effective beading on a regular-wash daily driver — well below the label's 12-month claim.
Who should buy this — and who should skip it
Good fit for drivers who want reliable rain protection without spray-on hazing frustration and who don't mind reapplying every 6–10 weeks. Skip it if durability past two months is the priority — bonded glass coatings (Gtechniq G1, Aquapel) last months longer per treatment.
Safety and environmental impact
The SDS carries DANGER from H225 (flash point 11.7°C — highly flammable during application). H319 (eye irritation) is the only health H-code; DANGER is driven by flammability only. Estimated VOC ~630–780 g/L — apply outdoors or with the garage door open; closed-garage use is unsafe at this flash point. No Prop 65 label warning confirmed on the US product. IPA and ethanol are readily biodegradable; no aquatic toxicity.
Frequently asked questions
How long does Glaco Roll On Large last?▾
Real-world durability on a regularly-washed daily driver is roughly 6–10 weeks, though results depend heavily on glass prep. The label's 12-month claim assumes optimal conditions that most users won't replicate. Reapply when beading noticeably weakens.
Does Glaco Roll On cause wiper blade chatter?▾
Initial wiper chatter is common in the first few wiper cycles on freshly coated glass and typically resolves on its own. Persistent chatter after break-in usually indicates old wiper blade degradation rather than a product defect — Soft99 recommends their Blade Reviver product for that case.
Is Soft99 Glaco Roll On the same as Rain-X?▾
Both are IPA-based silicone rain repellents, but the Glaco Roll On uses an integrated felt applicator rather than a pump spray. The felt applicator delivers the product more evenly, reduces hazing risk compared to spray-on application, and is the defining feature of this product.
Can Glaco Roll On Large be used on side windows and mirrors?▾
Yes — Soft99 explicitly lists all glass surfaces, including side windows, rear glass, and mirrors. The integrated applicator makes even coverage straightforward on non-windshield glass.
Does Soft99 Glaco Roll On contain PFAS or fluoropolymers?▾
No — SDS Section 3 lists propan-2-ol (IPA), ethanol, and sulphuric acid at low concentration. There are no fluoropolymer or PFAS ingredients in the Glaco Roll On Large formula.
From the manufacturer
Marketing copy from Soft99, via Amazon. Not editorial.
- •Discover the power of Glaco! The surface of the glass, although it appears completely smooth, is in fact porous and uneven. Because of this, water settles and sticks to the glass, forming sheets and drops of water in various shapes and sizes. Glaco coatings effectively fill all the pores in the glass, creating a perfectly smooth, even surface. As a result, water no longer settles on the surface, but forms perfectly round droplets which run off the windshield instantly.
- •Glaco Roll On Large is one of the strongest water-repellent liquid wiper the Glaco series.
- •The water repellency effect appears at 45 km/h. Great in urban-driving!
- •Protect all glass elements, no matter the weather! You'll appreciate it in summer, as it can easily remove insect remains, and even in winter, as it makes it harder for windows to frost!
- •Thanks to its ergonomic bottle shape and integrated applicator, Glaco Roll On Large is super-easy to use and requires no additional accessories!
- •Made in Japan.
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Manufacturer specifications
- Material
- Silicone
- Brand
- SOFT99
- Style
- Liquid
- Item Weight
- 120 Grams
- Item dimensions L x W x H
- 8.54 x 6.69 x 6.69 inches
- Brand Name
- SOFT99
- Unit Count
- 4.0577 Fluid Ounces
- Global Trade Identification Number
- 04975759041078
- Number of Items
- 1
- Part Number
- 4107
- Model
- 4107
- Item Type Name
- Glaco Roll On, Large, 120 ml
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