This was called 'Enchanting' in Diablo 3 and is now referred to as Transmog in Diablo 4. This is a very fancy mechanic that allows you to customize and create an image over your pre-existing armor. Also, when items are salvaged, you can use the Wardrobe to customize salvaged gear into a new look, called 'skins'. Any Salvaged Materials will show in the Blacksmith's menu on the lower left in the Salvage menu box.

Click Common first and Accept, then Magic, and finally Rare items.

After you've equipped any improved gear, speak to the Blacksmith in town and open the Salvage tab (the first tab).If the item is highlighted in green, it is an improvement to what is currently equipped, and you should consider replacing your currently equipped item. This is easily done by comparing the gear in your inventory to what is already equipped on your character. Comb through your inventory and sort through what improvements you can make to your current gear.If you’re just starting out and want to know which reserves to build up first, you definitely want to start filling your pockets with the magical materials you earn by destroying your gear at the blacksmith in town. The materials you get from salvaging items of various rarity are extremely important for gear enhancement and crafting while leveling and for endgame content.

How to Decide What to Salvage at the Blacksmith Salvage Caches often contain rare materials needed to upgrade or create Legendary weapon.Potion Caches contain various potions that increase your stats and experienced gained.Herb Caches contain herbs used to craft potions at the Alchemist.Monsters will also drop other various caches that you must open from your inventory. Once you click on them, you pick up the items on the ground. These caches must be clicked on in your inventory to open them, or they will just sit in your inventory. Upon completing quests, opening certain chests, and even defeating some monsters, you may gain Caches of items. You can’t exactly attack while mounted, but you can perform a leaping special move to dive straight into combat! Mounts in Diablo 4 will allow you to traverse large expansive regions at a much quicker pace, and can be customized with various cosmetics that can either be unlocked in game or bought as microtransactions.

Current diablo 3 season quest