Would it be more effective if I used products from the same skincare line?

It's a thought that suddenly crossed my mind today.

If you look at the cosmetic description page

It says that the effect is better if you use cosmetics from the same line.

Is that really the case?

For example, if you want to moisturize and are also interested in whitening

You know you can use a hydrating toner and a brightening intensive serum!

And since each brand has its own famous products...

I am from the same brand line

I don't think I've ever had a perfectly coordinated skincare routine!

I just suddenly got curious so I left a comment lol

Is it company marketing, or is it a fact based on scientific evidence?

I'm curious! If anyone knows the answer, please let me know~