I have been using Olia for quite some time now - almost as long as it has graced our pharmacy and supermarket shelves.
It's relatively competitive in price when you think of what hair dyes are available on the market right now, and the variety of inventions companies have made in order to put the dye in your hair... Mousse, bowls, spatulas, flat brushes, blah blah.
Olia is easy to use and doesn't stink out your entire house; it's ammonia free. Good news for home-hair-dyers in the winter - don't freeze with the bathroom window open for ventilation like most other dyes available.
Anyway, to use just squeeze the colourant tube and the developer cream into the pot, then give it a good shake. It develops quite quickly, so it's ready to use by the time it's been shaken up and you've laid an old towel on the bathroom floor.
I use a wide-toothed comb to comb my hair back, then follow the nozzle along those lines made. Easy. Don't forget to dye the crown of your hair too - this is often forgotten and creates patchy home-dyes!
I haven't used another dye for as long as I remember - I love this product so much I reach for it again and again, even trying out different shades. The coverage is brilliant and the shades are noticeable. The most noticeable difference you see is outside in natural light. I just dyed my medium brown hair 7.3 which was a dark shade of blonde. It did make a difference, and did lighten my hair without it looking 'fake' like bleach does. I was hoping to bend out my dark roots and very bright (bleached) under highlights - and it worked really well. My hair looks great now.
For around £7 you can give yourself a great confidence boost. I always feel more confident when I have coloured my hair.
The majority of the shades on offer are natural shades of auburn, brown and blonde. Of course, there is always the red colour although I would recommend
The only minor issue is that there needs to be a tiny little bit more liquid in the end product - for long hair it's only just enough dye. My hair is medium length, shoulder length at the front and longer at the back.
What is clean dry hair?
Well... Wash your hair the day before you intend to colour it, and avoid putting any product in it. Never put dye on wet hair, just-washed hair or on top of styling products. Next day hair with no product in it is best. Wash it at night, dry it and go to bed. In the morning, you hair should be the perfect condition for home-colouring.