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Gtechniq Crystal Serum Light

Best Seller Gtechniq Crystal Serum Light - 50 ml
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Available Sizes

Gtechniq Crystal Serum Light
30 ml
($2.33 / ml)
Gtechniq Crystal Serum Light
50 ml
($2.20 / ml)

Product Information

  • Paint coating that adds a beautiful gloss and durable protection
  • Gtechniq proudly claims the protection will last 3 - 5 years
  • Designed after the professional use only, Crystal Serum Pro
  • Product Codes: CSL 0.03, CSL 0.05
  • Read full description

Customer Reviews

100% of customers said that they would buy this item again
Based upon 20 ratings

Product Description

Gtechniq Crystal Serum Light (CSL) is a high quality coatings that will add an unbelievable amount of gloss, depth, and protection. It is so strong that right after you apply it you can't remove it with traditional polishes you would need to wetsand it. CSL was designed from the same DNA as the incredibly popular, but professional only Gtechniq Crystal Serum. The original Crystal Serum professional coating boasts a 7 year guarantee from Gtechniq and they took it upon themselves to make an easier to apply consumer product, which is Crystal Serum Light. While the original Crystal Serum is supposed to last 7 years, CSL will last approximately 3 - 5 years according to Gtechniq. CSL's ultra-durable, high-gloss, slick to the touch, 9h clear ceramic will reach about 80% of the CS Pro's performance (scratch and chemical resistance). When compared to the other consumer Gtechniq coatings (i.e. C1 Crystal Lacquer) it is about double the performance (scratch and chemical resistance). The gloss and shine of the paint is simply put, amazing, and your paint will really stand out above the rest. For the best results we highly recommend removing imperfections before application, like you would with any coating. Once your paint is thoroughly cleaned and prepped with an IPA or Panel Wipe wipe-down, apply CSL in a nice thin layer panel by panel. For in depth application tips check out the steps directly from Gtechniq below. Once applied, CSL will be resistant to chemicals ranging from pH2 - pH12. This means your paint will stay clean and protected from the elements for much longer than before. Pick up the Gtechniq Crystal Serum Light today and experience the amazing look on your car that only a high end coating can supply!

CSL Includes
  • 1x Bottle of CSL
  • 1x Dropper/pipette
  • 1x Applicator pad
  • 1x Pair of gloves
  • Instruction/info sheet
  • Gtechniq sticker

Application & Storage:
  • To apply CSL your vehicle must be indoors and it must remain indoors for at least 12 hours after application
  • Wash and decontaminate your vehicle's paintwork. If required, clay your paintwork to remove other bonded contaminants
  • If needed, polish your paintwork, either by machine or by hand, to remove any imperfections
  • Spray Panel Wipe onto a microfiber towel towel
  • With your panel fully cooled after polishing, taking care to avoid any paint protection film or other types of vinyl film, buff away all polish residues. This process ensures you will get the maximum number of chemical bonds between the coating and your vehicle's paintwork
  • Put on gloves to prevent CSL coming into contact with your skin
  • Soak the applicator pad with two full measures from the pipette and work the liquid into the pad to get an even saturation
  • Replace the lid on the bottle and set aside - do not keep the bottle in your hand as this promotes premature curing
  • Apply with applicator provided in overlapping strokes to an area roughly 2' x 2', or work to the bodylines of the vehicle
  • After coating a single small panel or half a larger panel, remove residue with a clean microfiber towel. Always remove from further than you have applied, working from the outside in. It is essential to check for residue
  • You may need to buff the same area several times to remove residue. We recommend using two microfiber cloths at any one time. Please note that you are only removing excess product
  • When working with coatings, we recommend you inspect the panels with a bright but diffuse light source, not with bright spot lights which are very poor for spotting coating residue
  • Avoid buffing with too much force as this can spoil the surface you are protecting, and you may also drag the partially cured coating off the surface
  • The microfiber cloths you are using should be rotated sufficiently and quickly so that CSL does not partially cure in the cloth, if it does cure then buffing residue will be significantly more difficult
  • If you miss removing residue and it cures fully, you should re-polish this area, and reapply CSL
  • As soon as you finish put the microfiber towels in water, and wash and dry them as soon as possible
  • Use CSL within 1 year of purchasing, for best results, once opened use within 3 months
  • Store opened bottles in a dry and cool storage area that is out of direct sunlight

Professional Detailer Reviews

My initial impressions of any coating are always based on of a few key points: Price, Ease of use, and Gloss. This coating is competitively priced relative to other consumer coatings, so that is great to see. I was very pleased with the ease of application, and the final appearance of this coating was excellent.

- Initial Impressions: Gtechniq Crystal Serum Light (CSL) by Zach McGovern


Crystal Serum Light Promotional Video

Gtechniq Crystal Serum Guide

From The Label

Product Description

Crystal Serum Light is the prosumer version of the world famous Gtechniq Accredited Detailer only Crystal Serum - a coating so hard that if applied incorrectly can only be removed by using 1,500 grit sand paper. Serum Light offers 80% of Professional Serum's performance, but if applied incorrectly can be machine polished from your vehicle's paintwork. When it comes to adding gloss, resisting swirls, contaminant and dirt repellency, Gtechniq Crystal Serum and Serum Light are the pinnacle in paint protection.


  1. PERFECT: If required polish your paintwork to remove any imperfections.
  2. DE-GREASE: Spray Gtechniq Panel Wipe onto a MFI Microfibre Buff Cloth and then carefully wipe down your paintwork to remove all polish residues.
  3. APPLY: Soak the application pad with 2 full measures from the pipette. Spread onto a small panel or 1/2 a large panel and immediately remove residue with a MFI cloth.

Customer Reviews

Reviewed by on
Would they buy this item again? Yes
I have just finished applying CSL to my first vehicle. I have applied CQuartz to several vehicles prior. At this time I can only comment on application and initial impressions. I will be able to comment on longevity between the 2 products in about 1 year. As far as application, I found the application of CQuartz was fairly easy. I have 2 minor issues with application. Firstly, CQuartz recommends 2 coats which is not a big deal but it is time consuming. Secondly, if you are a do it yourselfer and applying in a non-climate controlled environment such as in a garage or under a car port, there is a little guess work on set times (remove it too early and too much of the product is removed resulting in less protection, let it set to long and it will be really difficult to remove). I have found that cure times can vary by 100% between summer and winter temps. If it's a little warm, less cure time is needed, colder temps require a little more cure time. Basically, I guess on cure times based on outside temps at application time and recommended cure time from CQ. If it removes too easily, I let the next section set an additional 30 secs and repeat as necessary until the product is a little tacky to remove.

CSL on the other hand bonds pretty much instantly so the guessing on set time is removed. Also, CSL has a longer work time as compared to CQ. I let the product set for about 1 minute after application (until the CSL streaks started to bead) and removed the product. It came off very easily. As far as fear is concerned for the first time do it yourselfer, I definitely recommend CSL over CQ. In fact, I recommend CSL over CQ even if you have experience. One coating application vs 2 with CQ and no guessing game on set times before removal. I give CSL the clear edge on ease of application and removal. Water sheeting I find is about the same between the two products, so no clear winner here.

Please do not let me frighten anyone from purchasing and applying CQ. It is a good product and with any common sense is easy to apply and remove as long as the directions are followed. For me, CSL was much easier to apply and remove. If the coating lasts nearly the length of time as CQ, I will stick with CSL from here on.
Reviewed by on
Would they buy this item again? Yes
First use of the CSL. MY fifth different name brand coating applied. This is the easiest I've use to date. and the best looking also. I have done multiple vehicles with this coating, just csl on one and csl topped with exov3 on the other. To me the exo took some of the candy sparkle from the csl but still looked very glossy. The csl only coated the vehicle, I have done multiple coats, 3 to be exact and the gloss and candy just seemed to be getting more and more after each coat. I am testing this product, so if the multicoat messes up, I will repaint car as I am also a professional painter. This stuff is amazing. Cant speak for endurance at this time as I am a newby to csl. Will be buying more. My new go to coating.
Reviewed by on
Would they buy this item again? Yes
Crystal serum is very easy to apply and the product works great!
I love every Gtechniq product I've tried.

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