Why I'll never use again, and why hand waxing is best for that showroom finish.
Scenario: 2014 Mini Clubman Cooper SD
Product: Alien Magic Gravity Ceramic Sealant
Cost: £35 - used once and then thrown!
Can't be bothered to read anymore? See the result I achieved - image at bottom.
After using my exact same process, same products, I thought I'd give the sealant a try, it'd been taking up space in the van for a while, the reviews were good, so I thought "lets give it a go." Mixed as per the instructions and applied through my gun, all good so far.
Went on like a dream, and wet it looked amazing, really pleased, rung on the door, customer saw it, was happy, and we started talking. Packed gear away, spoke to husband, I said goodbye, and looked back! OMG, I could have cried! Now it was dry, it was dull and looked aweful.
Arranged to return a few days later to fix.
Product requires "exact" conditions to bond correctly.
1. Ratio has to be precise, 2. Car can't be driven for a 3 hours before application, and 3. Can't be used in sunlight, not just direct sunlight, but any sunlight.
Essentially, it's not a great product for a mobile detailer like me, or when applying outside, especially in the spring and summer, but great if you have a workshop and you've had the car for a few hours before starting the clean.
This isn't stated on the product, I got this info from the detailing community. The main issue is temperature, not just from sunlight, but (mostly) from car use, because the hot exhaust gases, heat up the rear of the vehicle, which causes the sealant to fail.
I say it's easy, from the standpoint that it took 5 hours to fix, and I lost a days pay. It took 5 hours because I removed it from the car completely. I couldn't trust it since, I normally only clean customer cars twice per year, because the products I use are premium.
It was easy to fix from the standpoint that my reputation was preserved and the customer was happy.
This was a free of charge restoration.
New Golden Rule: A high price tag doesn't always equate to a premium product.
Work with one panel, or a section of a panel, start with roof and work down as per usual.
1. Decontamination: Citrus Pre-Wash, ratio 1:1, dwell time 5 minutes, and then rinse.
2. Lubrication: I use this for claying, and Bilt Hamber Auto Wash Shampoo is perfect for this.
3. Claying - : Bilt Hamber Auto Clay Regular, apply to a very wet, well lubricated panel. Check clay regularly, if dirty fold over, and continue.
Important: Make sure you keep the section you're working on very wet at all times.
4. Post Clay: When the entire car is clayed, rinse and shampoo again - Important: Don't rinse this shampoo, you need this as a lubricant during waxing.
5. Waxing: Use Bilt Hamber (BH) Double Speed wax (DSW) - Keep the surface wet all the times, if it dries, add more with your mitt, or gun, depending on how you shampoo.
6. Wax Application: Apply DSW to a wet surface - this is crucial - Pro Tip: I think BH advise adding to a dry surface, that's not how I do it, I use it daily and always to a wet / soaked surface.
Why Wet? Because Auto Wash shampoo includes a lubricant, that I use to dilute DSW, this means I get a super thin layer of wax, that spreads and buffs more easily. DSW is that good, it can buffed off almost immediately.
As before work on a panel or section of a panel.
Result below;
Scenario: Paint looked awesome on initial inspection, a 2025 VW Golf eHybrid.
Once the car was at the surgically clean state, I discovered moderate to severe water spotting on the rear wheel arch panel. The surface was smooth to the touch, and covered with a sealant. Further discussion with the customer, vehicle cleaned December 2025, by a scratch-and-clean service.
This is a weird case, since the spray on sealant used by scratch-and-clean services normally lasts for 4 weeks max, so the fact it's lasted for 4 months was a strong indictor of what was going on here.
Likely cause: Cheap spray sealant applied to a pooly dried surface.
Here's my prognosis;
Application of a high-solids or "heavy" spray sealant (possibly a cheap ceramic-infused retail product) directly over a panel that hadn't been properly dried.
Scratch-and-clean service effectively "laminated" the mineral deposits. Because the surface felt slick, the customer likely thought the car was still protected, when in reality, the minerals were trapped against the clear coat.
Standard cheap sealants usually die within 4 weeks, but several factors can artificially extend that.
(i) Low Abrasion: A vehicle that is barely driven doesn't face the mechanical friction needed to strip it.
(ii) Bonding to Contaminants: Sometimes these products bond even more aggressively to "dirty" paint or existing mineral films than they do to clean clear coat, making them surprisingly stubborn to remove.
This is a typical experience, made worse by infrequest driving and repeated use of the scratch-and-clean service, when no clean is required.
(1) Not driving enough to remove the sealant. Wax is removed through milage abrassion - air, iron contaminants etc
(2) Assuming dust is dirt, and that bugs, tar, sap and bird poop, requires a full wash to remove.
(3) Subsequent low quality cleaning techniques - poorly cleaned and dried - causing water spots.
(4) Using low quality wash and wax chemicals, which can fail as a mechanic bond.
(5) The perfect storm is all of the above combined, over and over.
We essentiall have multiple layers of wax encapulating multiple layers of mineral deposits, mostly calcium, magnesium, and iron, which leave acidic or alkaline residue that bonds to or eats into the paint, causing permanent etching.
Initial advice, drive a lot more miles and if needed ONLY clean with Venture pureRinse.
Hindsight advice after a long deliberation - Needs machine polish correction, for one, how many layers of sealant are we talking about? 1, 2, or 12?