I'm just gonna copy/paste my previous response to a similar inquiry below, but TLDR, the mist has all of the ingredients in the original FTE plus a few extras. It is literally the closest thing to the liquid form of the original FTE. :)
They are virtually identical, with a few minor differences. Mind you, Korean ingredient lists aren't read the same way US ones are (see this great post for reference), so the items that are just flipflopped in the two lists are meaningless. The mist has every single ingredient in the FTE, with a few extras (the non-bold stuff).
I have all 3 items (original FTE, mist, and new FTE), and I've transcribed these ingredients directly from the boxes.
Matching Ingredients (for the original FTE vs mist form) are in bold, some notes follow:
Missha First Treatment Essence (original) Saccharomyces Ferment Filtrate, Propanediol,Glycyrrhiza Glabra (Licorice) Root Extract, Niacinamide, Polyquaternium-51, Bifida Ferment Lysate, Ulmus Davidiana Root Extract, Raffinose, Amaranthus Caudatus Seed Extract, Piper Methysticum Leaf/Root/Stem Extract, Centella Asiatica Extract, Beta Vulgaris (Beet) Root Extract, Portulaca Oleracea Extract, Rosmarinus Officinalis (Rosemary) Leaf Extract, Chamomilla Recutita (Matricaria) Flower Extract, Phellodendron Amurense Bark Extract, Cassia Alata Leaf Extract, Sodium Hyaluronate, Hydrogenated Lecithin, Glycerin, Pentylene Glycol, Hydrolyzed Corn Starch, Tromethamine, Water (Aqua), Adenosine, Ethylhexylglycerin, Acetic Acid, Lactic Acid, Phenoxyethanol
Missha First Treatment Essence Mist Saccharomyces Ferment Filtrate, Saccharomyces/Ginseng Ferment Filtrate, Propandiol, Glycyrrhiza (Licorice) Root Extract, Niacinamide, Bifida Ferment Lysate, Ulmus Davidiana Root Extract, Betaine, Amaranthus Caudatus Seed Extract, Piper Methysticum Leaf/Root/Stem Extract, Beta Vulgaris (Beet) Root Extract, Centella Asiatica Extract, Portulaca Oleracea Extract, Rosmarinus Officinalis (Rosemary) Leaf Extract, Chamomilla Recutita (Matricaria) Flower Extract, Cornus Officinalis Fruit Extract, Phellodendron Amurense Bark Extract, Bambusa Vulgaris Extract, Cassia Alata Leaf Extract, Hydrogenated Lecithin, Sodium Hyaluronate, Triethylhexanoin, Pentylene Glycol, Glycerin, PEG-0 Hydrogenated Castor Oil, Hydrolyzed Corn Starch, Raffinose, Polyquaternium-51, Water (Aqua), Tromethamine, Lactobacillus Ferment, Adenosine, Ethylhexylglycerin, Acetic Acid, Lactic Acid, 1,2-Hexandiol, Phenoxyethanol
**Notes:
Flipflops:
Centella & Beet extracts
Sodium Hyaluronate, Hydrogenated Lecithin
Pentylene Glycol, Glycerin
Tromethamine, Water
Moves:
Raffinose moved from 9th to 27th
Polyquaternium-51 from 6th to 28th
And just for kicks: Missha First Treatment Essence Intensive: Saccharomyces Ferment Filtrate, Bifida Ferment Lysate, Propanediol, Niacinamide, Polyquaternium-51, Ulmus Davidiana Root Extract, Betaine, Amaranthus Caudatus Seed Extract, Piper Methysticum Leaf/Root/Stem Extract, Beta vulgaris (Beet) Root extract, Phellodendron Amurense Bark Extract, Cassia Alata Leaf Extract, Hydrogenated Lecithin, Sodium Hyaluronate, Pentylene Glycol, Water, Trehalose, Disodium EDTA, Hydrolyzed Corn Starch, Adenosine, Ethylhexylglycerin, Butylene Glycol, Glycerin, Raffinose, Tromethamine, Acetic Acid, Lactic Acid, 1, 2-Hexanediol, Caprylyl Glycol, Hexapeptide-9 Phenoxyethanol, Potassium Sorbate