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Decent.
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The manufacturer's Safety Data Sheet classifies this product with one or more GHS Category 1 health hazards — the most severe tier. The hazard statements in quotes below are the verbatim GHS language from the SDS, as required by OSHA's Hazard Communication Standard. The line under each statement translates the GHS classification into plain language.
GHS Category 1 eye damage — classified as causing irreversible eye damage on contact.
GHS Category 1 carcinogenicity — classified as suspected of causing cancer with repeated or prolonged exposure.
If swallowed, inhaled, or splashed in eyes:
Call Poison Control immediately at 1-800-222-1222 (US, 24/7, free) and have the product container with you. Poison Control's standing guidance is to not induce vomiting after chemical exposure; they will direct first-aid steps based on the specific product.
About this product's hazards. This product's Safety Data Sheet uses signal word danger. Read the manufacturer's SDS and follow all safety instructions before use. CarCareTruth ratings translate the manufacturer's safety sheet. They do not replace the SDS or substitute for a hazard assessment specific to your task.
Last reviewed June 14, 2026
TL;DR Rated to +32°F only · zero sub-freezing protection; skip it for any climate that freezes. Thirty years of devoted owners confirm outstanding cleaning and streak-free clarity; it's earned a genuine following. The 200:1 concentrate ratio delivers exceptional per-gallon value. Health score is 5.0/10 · DANGER signal word from SDS §2 despite the methanol-free formula.
Kristall Klar is a 200:1 cleaning concentrate · one 8.5 fl oz bottle makes over 13 gallons of working fluid. The product provides no freeze protection whatsoever; the label is explicit. The 30-year track record and broad, well-rated owner feedback reflect genuine community consensus: strong bug, grime, and road-film removal with a streak-free finish. The alkaline formula contains water softeners that prevent mineral buildup in washer-system jets.
Best for daily drivers in warm or mild climates who want a premium alcohol-free concentrate with verified cleaning performance and outstanding per-gallon value. Also suited to enthusiasts who use it year-round in temperate regions. Skip it if your climate regularly drops below freezing · the formula provides zero cold-weather protection and will freeze at 0°C once diluted.
SDS §2 (Rev 2025-10-01): DANGER signal word, H318 serious eye damage, H302 harmful if swallowed, H315/H317 skin irritation and sensitizer, H350 carcinogen Cat 1A (ethanol IARC Group 1). Prop 65 warning applies. Eye protection is the H318-based precaution during concentrate dosing. Drain-destined via stormwater; avoid storm-drain disposal · sodium pyrithione is acutely aquatic-toxic per SDS §12 ingredient data.
No. The product label states explicitly 'NO Freeze Protection · Once diluted, product will freeze at approximately 32°F (0°C).' It is a warm-weather or year-round cleaning concentrate for climates that do not see freezing temperatures. For freeze protection, nextzett makes a separate Anti-Frost formula.
The label specifies approximately 0.7 fl oz (20 ml) of concentrate per gallon of water · a 1:200 dilution ratio. One 8.5 fl oz bottle makes over 13 gallons of working fluid. Mix only with untreated tap water; distilled or softened water may cause foaming.
The DANGER signal word reflects H318 (serious eye damage, Cat 1) from SDS §2 · alkaline surfactant concentrates at pH 10.6 can cause serious eye injury. The H350 carcinogen classification (Cat 1A) from ethanol's IARC Group 1 designation also appears in SDS §2. These are genuine SDS-derived classifications, not generic boilerplate.
The health deductions reflect the DANGER signal word (−2.0), H302 harmful if swallowed (−1.0), H315 skin irritation (−0.3), Prop 65 warning from ethanol (−1.5), and the PPE eyes-required tier from H318 (−0.25). The product avoids methanol's acute systemic toxicity H-codes (H301/H331/H370), which is a genuine improvement · but the remaining SDS §2 classifications still produce a mid-range health score.
Yes · SDS §13 confirms the surfactants are biodegradable per the EU Detergents Regulation. This is an SDS-sourced confirmation, not a marketing claim, and is credited in the environment score.
Marketing copy from nextzett, via Amazon. Not editorial.
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