Crystal Serum Light (CSL) - Case
Crystal Serum Light (CSL) is the prosumer-grade version of Gtechniq’s world-renowned professional coating, Crystal Serum. The original professional formula is so durable that, if applied incorrectly, it can only be removed by machine polishing with 1,500-grit sandpaper.
CSL delivers up to 80% of the performance of the professional product, making it the ultimate choice for enthusiasts who want professional-grade results at home. In terms of gloss enhancement, swirl resistance, and contaminant repellency, Crystal Serum and Crystal Serum Light represent the pinnacle of paint protection technology.
Kit Includes:
- Crystal Serum Light (30ml or 50ml)
- Lint-free applicator pad
- Dropper
- Application instructions
- Gtechniq sticker
Additional Product Details
Crystal Serum Light forms a chemically bonded, ultra-durable ceramic layer with a 9H hardness rating. Its high-gloss, slick-to-the-touch finish not only enhances visual depth but also offers long-lasting protection against swirls, dirt, and environmental contaminants.
Once applied, CSL maintains gloss levels in the upper 90th percentile for significantly longer than traditional waxes or sealants—making maintenance easier and keeping your car looking freshly detailed for months.
How to Use
- Make sure your car is indoors and will stay there for at least 12 hours after application
- Do not apply in direct sunlight and only work between 5°C and 25°C
- Shake the bottle well and wear gloves throughout the process
- Wash and decontaminate your paint thoroughly, and polish if needed to remove imperfections
- Wipe each panel with Panel Wipe using a clean microfiber cloth, working in small sections
- Fill the applicator pad with 3 full pipette measures of CSL and work it in evenly
- Close the bottle and set it aside to avoid premature curing from hand heat
- Apply CSL in overlapping strokes to a 2ft by 2ft area or follow the natural body lines
- Wipe off residue immediately using a microfiber cloth, gently buffing if needed
- Use two cloths and rotate them often to prevent CSL from curing in the fibers
- Check your work with a bright, diffused light to ensure no residue is left behind
- If any residue cures fully, polish that spot and reapply CSL
- After application, soak your used cloths in water and wash them as soon as possible
- Wait about 2 hours before applying EXO or C2 on top
- Store CSL in a cool, dry place
- Use within 3 months of opening for best results
Safety Information
Warranty
Within 30 days from purchase: TRC will replace items damaged in shipping upon inspection of photos. Opened, used, or partially used products excluded, as well as any degradation from storage or environmental exposure; customer dissatisfaction with scent, color, or consistency; misuse.
After 30 days: no warranty applies.
Note: No manufacturer warranty is provided beyond shipping damage replacement. No guarantees are made for product longevity, performance, or fitness for a particular purpose.








