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Gtechniq Crystal Serum Light & EXO v4

Availability: In stock

Incl. Tax: £85.00 Excl. Tax: £70.83
Product No. EXOCSL-MAS
For the definitive hydrophobic finish, Crystal Serum Light once cured, can be over-coated with Gtechniq EXO. .. Read more

Availability: In stock

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Surely the ultimate sealant pack on the market right now - Gtechniq Crystal Serum Light & Gtechniq EXO. For the definitive hydrophobic finish, Crystal Serum Light once cured, can be over-coated with Gtechniq EXO.

Gtechniq Crystal Serum Light

Crystal Serum Light is the consumer 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. Offering up to 3-5 years of durabiility, Gtechniq Crystal Serum light promises to be the best performing consumer available paint sealant on the market! 

Wherther your primary objective is to add gloss, surface slickness, resist swirls, or simply to avoid contaminants and promote long term dirt repellency, Gtechniq Crystal Serum Light is at the very pinnacle in paint protection. This sealant is ideally positioned for those who clock up heavy mileage, but want to retain a perfect shine in between a normal car wash routine. Equally, professionals can use Gtechniq Crystal Serum Light as a fantastic up-sell opportunity when working on customer vehicles. Crystal Serum light can be applied as a stand-alone product, either as a single or multi-layer coating

With a sealant of this quality, we recommend experienced detailers use this product. If applied incorrectly, it's not the end of the world as with a machine polisher you can safely remove Crystal Serum light. Although the product is more DIY friendly than regular Crystal Serum, the chemical bond formed between the coating and your car is extremely strong, therefore it is vital you follow the instructions on how to apply to the letter. Read our comprehensive how to guide on how to apply this product before undertaking - equally, if you want to speak to one of our team for advice then give us a call. If it all looks a little too daunting, consider the easier to apply Gtechniq C1 or EXO sealants.

Gtechniq EXOv4

EXOv4 Ultra Durable Hydrophobic Coating Sealant is the latest version of Gtechinq's hugely popular EXO formulation. The coating offers extreme hydrophobic function to the vehicles surface, protecting your paintwork from even the harshest weather, lasting for over 18 months. Offering both supreme water and dirt repellency, the sealant creates a barrier resistant to washing chemicals and heavy road grime. Further cleaning or detailing of your vehicle becomes a simple task, making marks including water spots easy to remove. EXOv4 is also significantly easier to apply than EXOv2 and EXOv3 but still creates the same great gloss, slickness and beading as its predecessor.

Order before 3pm for Same Day dispatch. Next working day delivery is provided as standard. Free delivery for UK mainland customers on orders over £50 inc vat.

Next Day Delivery (Orders over £50 including. VAT) Free!
Next Day Delivery (Orders under £50 including VAT)   £4.98
Next Day by 10AM £15.00
Next Day by 12PM £7.00
Saturday by 10AM £25
Saturday by 12PM


Northern Ireland (2 Days) £7.50
Scottish Highlands (2 Days) £7.50
Next Day Offshore Island £22

Offshore Island (2 Days)


Europe & Rest of World - Costs & Transit Time

Country Transit Time  Cost Customs Clearance Charge* 
Austria  3 days £9.88  
Belgium  2 days £7.50  
Bulgaria 4-6 days  £25.40  
Bosnia & Herzegovnia  4-6 days  £25.40 £25.00
Croatia 4-6 days   £19.96  
Czech Republic 3-4 days £10.77  
Denmark 3 days  £11.34  
Estonia 4-5 days  £19.73  
Finland 4-5 days  £18.49  
France 2 days  £7.50  
Germany 2 days  £7.26  
Greece 4-8 days  £26.24  
Hungary 4-5 days  £12.38  
Ireland 2 days  £7.50  
Iceland 4-6 days  £38.37 £25.00
Italy 3-4 days  £15.42  
Latvia 4-6 days £17.81  
Lithuania 4-6 days  £15.21  
Luxembourg 2 days  £9.76  
Netherlands 2 days  £7.43  
Norway 4-6 days £22.96 £25.00
Poland 4-5 days  £10.26  
Portugal  4-5 days  £17.06  
Romania 4-6 days  £23.69  
Serbia 4-6 days  £29.49 £25.00
Slovakia 3-4 days  £14.56  
Slovenia 4-5 days  £12.66  
Spain 3-4 days  £13.94  
Sweden 4-5 days  £12.23  
Switzerland 3 days  £13.14


*The Customs Clearance Charge is a fee for administrating the process of clearance and completing the importation of your goods legally into your country.

Returns policy

If you are a UK customer you have a statutory right to cancel your order within 14 days of receipt of goods. If you wish to exercise your right to cancel you must email us at, call us on 0333 222 9944 or write to us and return the products to:

Morelli Group Ltd
Unit 2 Baird Road

All items returned must be unused, in the original packaging and in a saleable condition. The exception to this rule is:

  1. Paint matched from a sample and made especially for you or from a paint code given to us.
  2. Special orders these goods are not usually stocked, these items require a 50% deposit upon ordering.

All returns ordered incorrectly should be returned at your cost, please include a copy of you order and contact detail stating if you require a refund, exchange or replacement. We strongly advise using an insured postal service when returning goods back to us.

Faulty Products

If in the unlikely event that any goods are found to be faulty, we will be happy to send you a replacement as soon as possible. We will arrange collection of the original goods which must be returned within 14 days of receipt.

Incorrect Orders

We do our very best to ensure that your order is supplied correctly, in the event that this is not the case please advise us within 48hrs of receiving your goods. Call our dedicated team on 0333 222 9944 or e-mail us at We will dispatch the correct goods as soon as possible and arrange collection of the incorrect goods.

Product Questions

I've bought this combo 2 years but my car restoration took a bit longer than expected to get done. Is it safe to still use it? I didn't open any box.

How To Guides

To apply Gtechniq Crystal Serum Light your vehicle must be indoors and it must remain indoors for at least 12 hours after application.Wash and then decontaminate your vehicle’s paintwork with Gtechniq W5 Citrus All Purpose Cleaner and W6 Iron and General Fallout Remover. 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 Gtechniq Panel Wipe onto a buffing cloth. 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 the gloves provided to prevent Crystal Serum Light coming into contact with your skin. Soak the application 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 microfibre buffing cloth. 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 microfibre 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 and 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. Take care that the microfibre cloths you are using are rotated sufficiently and quickly so that Crystal Serum Light does not partially cure in the cloth, this will make buffing residue significantly more difficult. If you miss removing residue and it cures fully, you should re-polish this area, and reapply Crystal Serum Light. As soon as you finish put the microfibres 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's out of direct sunlight.

Stage two:

EXO can be applied as a top layer for Gtechniq Crystal Serum Light (we recommend applying C1 Crystal Lacquer as a base coat for easy to mark and dark paints). If you are applying over Crystal Serum Light, EXO should be applied more than 3 hours but less than 12 hours after you finish the Crystal Serum Light application. Ensure that your vehicle is out of direct sunlight but warmer than 5c, is completely dry and will stay dry for at least 3 hours after application.

Use the nitrile gloves provided, folding the micro-suede cloth into a small square tip several drops of EXOv2 onto your applicator pad. Spread the coating over an entire panel ensuring full coverage. As soon as you have spread the coating over a single panel fold your first microfibre cloth twice to form a square, spread and remove most of the residue using a light touch to ensure you do not introduce any marring to your finish. With your second folded cloth remove all remaining residues. We advise to move your head so that you get direct and oblique views of your finish to spot all residue and we recommend bright but flat lighting to make residue spotting easier. Once you have finished coating your vehicle, repeat so that your vehicle is coated twice - allow the coating to cure for at least 3 hours.
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Free UK shipping on orders over £50*. Next working day delivery is standard with us, we don't see why you should wait longer. European shipping is also available for our friends on the continent.

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