What are the best hair products to make hair look denser?

[Rogith]

Best hair products to make thin hair look denser and neat and without any harm to hair like hair loss.

[StillAlive]

I believe you want to look at 'hair loss concealers' on Google. Toppik, Dermamatch, Kaboki, there's a whole bunch of concealers out there, widely used in the film industry, no real harm done and you can think of it as the equivalent of 'make-up for your head'. Only downside is that you may become psychologically dependent on them. 

[A_4_Archan]

You can use Hair fibers...plus for styling you can use volumizing powder which will hold your hairs and will provide body to it and you can also use salt water ....

[mavigo]

I use hair fibers. Others use hair sprays and hair dryers. Just try some of these options and see what works for you. 

[Heisenberg]

This may be worth ago, but it is quite pricey: 

https://densehairexperts.com/collections/optimised-hair-care/products/densify-styling-paste-1?selling_plan=690408915218

Anyone got a recommendation for hair fibres? I've had a good look on Amazon UK, but reports and reviews mentioning things like staining and a 'dusty'/artificial look etc. are concerning. It seems keratin fibres are better than cotton allegedly.

[Heisenberg]

Just now, Heisenberg said:

https://densehairexperts.com/collections/optimised-hair-care/products/densify-styling-paste-1?selling_plan=690408915218

See that contains Alcohol Denat, which is a major problem, as that is not good for your scalp: https://www.byrdie.com/alcohol-denat-for-skin-5075721

[Gatsby]

Toppik is pretty much the go to fibre for a lot of people. To be honest I've only worn fibres a hand full of times. Having to wash it all out at the end of the day is just too much of a pain for me. However it makes a night and difference.