I enjoy using both Fabric Therapy and Soft, which are two of my favorite interior detailing products. I have been detailing for over 45 years and I have used literally thousands of different detailing products in that time. Polishangel, while being expensive compared to other detailing products/brands that would do the exact same thing for far less money, is still one of my all time favorite detailing product brands. Both Fabric Therapy and Soft (along with several other products that Polishangel manufacturer), are excellent products for cleaning and maintaining your interior. I like using them both as maintenance products. I like Fabric Therapy because it's a cleaning concentrate you can mix up using simple tap water, or the way I do it, with distilled water. I like the flexibility of being able to mix up my own cleaning solution using Fabric Therapy to whatever dillution rate I need, allowing me to either increase the concentrate amount to make a stronger solution, or decrease the amount of concentrate (which I normally do) to make a perfect light cleaning solution for inside the cabin. I can take that light solution (which I use two ways, one in a small wash bucket, and the other in a small sprayer bottle). The ways I use it are: 1) Mixed up in a small wash bucket which I can dunk my microfiber cloth or scrubber mitt into the solution, then wringing them out, and going to town cleaning my interior surfaces. The solution is safe on everything and I personally have never had a problem using them on any surface inside the cabin so they are very safe and effective products to use on your interior). I just wipe everything down with the dampened microfiber cloth or scrub sponge/mitt, and then follow behind with another dampened microfiber which is dampened in very warm water. I personally like using very warm/hot water, brought up to a temperature that is fairly warm, borderline hot, but is still warm enough it won't damage my microfibers, but also provide a little "oomph" so to speak with the water being warm/hot rather than cold. I just think it works a little better that way. If you are worried about microfibers, just use the COSTCO yellow microfibers, which are cheap enough you can just toss them after use so you never have to worry about cross contaminating the microfibers, which I have done in the past, so I like just using new cloths, and they are so cheap, it's just a good value to use new ones and never have problems. I do the same thing on the exterior. One and done. Which helps to prevent anything getting into the tiny fibers of a microfiber which are almost impossible to remove fully, always leaving even the tiniest bits inside the cloths, which can cause problems when wiping the exterior paint. I just don't take the chance anymore. Anyway, back to the Fabric Therapy. Again, both Fabric Therapy and Soft are great. They are very similar products. Almost identical actually. They smell identical. In fact, I will often pour any remaining solution of Fabric Therapy I have mixed up and used, into my SOFT bottle after I am done, so I don't waste any. I will say that if you are thinking about purchasing either of these two products, BUY THE BIG BOTTLES! The smaller bottles are far too small for what they are and you'll only get one or two uses out of them depending on how they are used and what they are used on, how big the vehicle is, etc. It's just a far better deal to buy the largest offerings they sell when you go to the purchase page. These two products (SOFT and Fabric Therapy) aren't too expensive compared to many of the other products that Polishangel sells, namely their waxes, sealants, and coatings, which are very expensive. Some people will cringe at the price of Polishangel detailing products, but for me, now that I am just an enthusiast, I really like using their products on my sports car. I don't use them on my daily drivers just due to the cost of them. But on my sports car (my pride and joy, weekend only type of car or "big boy toy" as I call it, I don't mind spending the extra money (much EXTRA, LOL). It just provides a "luxury" experience. I don't know why, and it's hard to explain, but I just love using Polishangel. Are there products that do the same thing for far cheaper? Yes there is. Is there any detailing brand I would want to use more than Polishangel? No, there is not. I just love using Polishangel products. I would highly recommend the entire Polishangel line to any detailing enthusiast who has a high end car, like a Ferrari, Lamborghini , Pagani, Koenigsegg, etc., but also for anyone who just has a car they love very much and want the best detailing products on the planet, then look no further than Polishangel. There products will bring you joy when working on your pride and joy, whether that pride and joy is a Honda Civic, or a Bugatti Chiron! Look no further than the best.....POLISHANGEL.