Gtechniq C2 Liquid Crystal (v4)
Based on pure monomolecular silicium (SI14), C2v4 Ceramic Sealant from Gtechniq, is a non-yellowing, high gloss, dirt-repelling coating that cross-links with all surfaces of your car, including bodywork, glass, and trim, providing long-lasting protection (as much as 8 months from a single application) and exceptionally easy non-smearing application.
How do I use Gtechniq C2?
Prepare the surfaces to be treated (C2 works on all substrates, including paint, grp, glass, metal, rubber, plastics) by washing with a wax-free pH-neutral shampoo to remove organic dirt such as grease, soot, wax, and polish residues, rinse thoroughly, and then dry using a drying towel (such as Gtechniq MF4 Microfibre Drying Towels).
Wipe C2 onto all surfaces using a microfibre cloth (we recommend Gtechniq MF1 ZeroR Microfibre Buff Cloth) and dry using more microfibre cloths. Do not apply in direct sunlight and allow to dry. By applying slight hand pressure when drying, C2 offers longer adhesion and higher gloss levels. One pass and a single thin layer is all that is required.
Maintenance
A single application of Gtechniq C2 will offer up to 8 months protection. C2 does not require any special maintenance routine and being inorganic will cause no adverse reaction with any other product including repaint. We recommend following best practice for surface care which includes ensuring that wash tools are kept free from contaminants that could scratch and using a ph neutral wax free car/boat/plane shampoo.
For very best results it is recommended to use a 1:20 dilution of C2 as a quick detailer (spray onto surfaces just prior to drying) once every 3 washes. C2 can also be layered to hide minor surface imperfections (eg marring on soft lacquers).
Sizes: 250ml, 500ml, 1L & 5L
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Frequently Asked Questions – Gtechniq C2 v4 Ceramic Sealant
What exactly is Gtechniq C2 v4 Ceramic Sealant?
Gtechniq C2 v4 is a spray-on, wipe-off ceramic sealant delivering durable protection, intense gloss, and extreme hydrophobicity. It uses SiO₂ technology similar to ceramic coatings but is much easier to apply—ideal as an entry into ceramic protection.
What are the main benefits of using C2 Ceramic Sealant v4?
Durability: Protection that lasts months.
Ease of use: Quick spray-and-wipe application.
Extreme gloss: Slick, deep, reflective finish.
Superior hydrophobics: Tight, uniform beading for easier drying and a cleaner look for longer.
UV protection: Helps resist fading and oxidation.
Versatility: Safe on multiple exterior surfaces.
Is Gtechniq C2 v4 a true ceramic coating like Crystal Serum Light (CSL)?
No - Gtechniq C2 v4 is a ceramic sealant. Coatings like Gtechniq Crystal Serum Light form a harder, thicker, more chemically resistant bond for years. Gtechniq C2 v4 offers the look and water behavior of ceramics in a friendlier, months-long format.
How is Gtechniq C2 v4 different from waxes or polymer sealants?
Waxes sit on the surface and fade quickly; polymer sealants last longer. Gtechniq C2 v4’s SiO₂ chemistry bonds more strongly for longer-lasting protection, superior water behavior, and better chemical resistance.
How long does Gtechniq C2 v4 actually last?
With proper prep and a dry application, expect up to 6 months. Environment, storage, mileage, and wash routine affect longevity. A wet-coat application typically gives 2–3 months.
How should I wash my car after applying Gtechniq C2 v4?
Use a pH-neutral shampoo (e.g., Gtechniq GWash) and the two-bucket method. Avoid harsh alkaline TFRs or aggressive automatic brushes to preserve durability.
Can I layer C2 v4 for more gloss and protection?
Yes. Apply a second coat after 1–2 hours for a subtle boost in gloss and slickness.
Can I use Gtechniq C2 v4 as a topper for other Gtechniq coatings?
Absolutely. Use it over Gtechniq CSL, EXO, or C1 every few months to refresh hydrophobics and add slickness—effectively “recharging” the coating.
What is the curing time for C2 v4?
It’s effective almost immediately, but keep the surface dry and chemical-free for ~ 12 hours post-application to allow the bond to stabilise.
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Established in 2005, Cleanyourcar.co.uk is the UK's leading online Car Care & Car Cleaning Megastore. We import car detailing products from around the world to give you the ultimate choice for when you come to clean your car.
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