Gtechniq EXO Crystal Hydrophobic Coating

Community data from r/AutoDetailing and Amazon long-term verified-purchase reviews puts real-world durability at 12–18 months on daily drivers exposed to regular washing. The manufacturer claims 18–24 months — the 24-month ceiling is achievable under ideal conditions but not the typical outcome. The 18-month midpoint of community data is roughly consistent with the label's floor. Many EXO users apply it over Gtechniq Crystal Serum Light, where it functions as a sacrificial hydrophobic topcoat — the underlying CSL layer has substantially longer-confirmed durability.

EXO works as a standalone coating that chemically bonds to decontaminated clear coat. You do not need CSL underneath. That said, the most common use pattern in the community is EXO applied as a topcoat over CSL (or another long-duration base coat) — in that configuration EXO adds hydrophobic punch and acts as a sacrifice layer that refreshes more easily than stripping and reapplying the base. As a standalone coating, EXO's 12–18 month community-confirmed durability is shorter than a CSL-level base coating but appropriate for buyers who want a simpler application.

Yes, for a ceramic coating EXO is on the more approachable end. The 'slow flash-off time' noted in the Amazon listing gives more room for error than tight-window alkoxysilane coatings. Application is wipe-on and buff-off on a decontaminated, polished surface. No high-spot epidemic documented in community reviews — the generous flash window appears to contain the main first-timer failure mode. IPA prep wipe is the recommended surface preparation step but is not included with the product.

The SDS signal word DANGER is driven primarily by H318 (Serious Eye Damage Cat 1) — the siloxane component classified in SDS §2 poses a real risk of serious, potentially irreversible eye injury on direct contact. SDS §8 specifies eye protection for this reason. H317 (skin sensitizer) and H335 (respiratory irritation) are also classified at mixture level; the SDS covers those with glove and ventilation guidance. The naphtha carrier carries an aspiration hazard at ingredient level (H304) — the SDS precautionary statement specifies: do not induce vomiting — contact a poison center or doctor immediately if swallowed.

No. SDS §3 lists silane and siloxane active ingredients — neither is a fluorinated structure. No fluorinated ingredients appear in §3. The product is PFAS-free based on SDS ingredient disclosure.