Definitely agreeing with what everyone else is saying, it’s hard but research various outlets before purchasing. Unfortunately skincare is not one size fits all so learn what your skin type is and what your skin concerns are then build around that.

Less is always more (less steps, less products), try to find products with multiple ingredients so you can skip buying multiple products if one can do it, research which products do not go together (like harsh actives with retinoids) and which ones work well together (like collagen + retinal), what you ingest is also a huge factor (when I cut out sugars and alcohol, my skin GLOWED obvi everyone’s lifestyle is different but something to think about), and most importantly: SUNSCREEN plz! That’s one of the biggest factors for anti aging.

For me personally, I only use Korean skincare and stick to the range you mentioned. I find that a lot of more affordable products do the same as higher end stuff