After seeing a bunch of videos on the Colourlock leather repair products, I decided to try and give them a go myself.
The problem is that apparently Colourlock has been bought by KC, and has since been rebranded under 'TheFinisher' brand. The customer service with TheFinisher is absolutely horrendous.
Firstly, all contact details on their website are inactive. The phone numbers listed will put you in a 10 minute hold, after which the line automatically gets disconnected. Emails sent to order@thefinisher.com or the contact-us form on the website are never responded to.
Eventually, I figured that contacting KC directly would be a better choice. But even there, the advertised 'kundendienst@koch-chemie.com' doesn't work (immediate email bounce). The address that works but again didn't give me any response is 'kundenservice@koch-chemie.com'. Calling KC is also hit and miss, I've tried numerous times and only got to speak to an employee once.
I ordered a full repair kit AND additional leather dye. They only send the kit, not the additional dye (almost a 100 bucks extra). Again, I'm not getting hold of anyone in the company to figure out how to solve this without having to resend the sample again and waiting even longer to be able to finish my project..
I hope someone finds my rant helpful. Please try to find a reseller who you can actually reach out to before ordering any of the products.