According to the text, the products that are expensive because they...

(1º§)EACH passing day brings many moments that cause you to furrow your brow. And the more face scrunching you do, the more dreaded lines are likely to emerge __ your forehead. But before you devote time (and a decent amount of money) to fading those pesky wrinkles, it's good idea to try and figure out what's really causing your lines. If you're under 30, chances are your forehead 'wrinkles' are in fact just dehydrated skin, according to one medic.

(2º§)Dr Ivy Lee, a board-certified dermatologist practicing in southern California, US, said dehydration lines can be easily improved without splashing the cash on Botox. She told Insider that unlike wrinkles caused by repetitive muscle movement dehydration lines are finer and have a "crepe paper-like texture when the affected skin is not well hydrated." And while we may associate dehydration with drinking water, the expert said drinking more water does not have any added skin benefits. Instead, she urges young people to use topical skin treatments.

(3º§)Dr Ivy said you should look for moisturisers that contain the following three ingredients:

Humectants, which attract water into the skin (eg: hyaluronic acid)

Emollients, which repair the skin barrier and soften the skin (ex: squalene and plant-derived oils).

Occlusives, which "trap moisture into the skin by creating a seal," the expert said (ex: hydrated petroleum or mineral oil).

(4º§) She recommended using CeraVe Moisturising Cream - a 177ml tube from Boots costs will set up back just £10.

(5º§) There's no denying that luxury products contain some premium ingredients and look pretty aesthetic, but given the cost __ living crisis, affordable skincare is just as important, especially when the products work just as well. Some dermatologists have shared their favourite skincare swaps for luxury products that they say work as effectively as expensive versions.

(6º§)Vaseline vs La Mer lip balm

La Mer lip balm is touted __ many celebs as a bit of a handbag necessity. But according to Mia, nothing beats a pot of good-old Vaseline. And while La Mer balm can set you back £58 ($75), Vaseline can be as cheap as a couple of pounds.

(7º§)The INKEY List Vitamin C serum vs SkinCeuticals 

Vitamin C creams and serums can brighten your skin and, according to some studies, can reduce the signs of ageing. But these products can be expensive, because they can be tricky to make, Rebecca explained. SkinCeuticals' C E ferulic vitamin C antioxidant serum is an excellent product, she said - but it will set you back a whopping £165 ($182). Instead, why not give the INKEY List's own vitamin C a whirl, Mia suggested, which only costs £9.99 ($15.99).