gloss
Lip gloss makes lips look more luscious. The play of light gloss brings to your lips, makes your pout look fuller. More kissable. More glamourous.
Sure, you could smear a little vaseline instead, but if you want kissable lips in a lovely color, vaseline would never do. You need lipgloss for that. Even if you go bare faced, a little lip gloss can do wonders for your appearance. Colored lip gloss and black go hand in hand. Especially if you don't want to wear any other makeup in your casual black outfits. That lip gloss can give you the color you need to set off your black outfit beautifully.
From that much needed sheen, to the moisture that keeps lips from cracking. The color can vary from sheer lip glosses that let your real lip color show through, to the more opaque glosses that give coverage as well as sheen. Even the sheen you get could be sparkly metallics, as in the stardust effect, or slick, as in the moist, kissable lips effect.
Besides lip gloss, this page features hair gloss.
What is hair gloss?
Hair gloss is a serum or spray you apply on your hair to make it shiny. Hair gloss gives hair a healthy sheen. It makes hair look more beautiful. Smoother. Silkier.
Looking for the cheapest gloss product online?
This is what I've found.

Estee Lauder Pure Color Lip Vinyl Gloss W/Stick #510 Blue Fantasy 2.9g/0.1oz
Your Price $11.00
Most Discounts
If you want value for money, (I know I do) here are the ones with the highest discounts as a percentage of the original price.

Estee Lauder Travel Set: Cleanser + Daywear Cream + Future Perfect Eye Cream + Mascara + Lipstick+ Lip Gloss+ Bag 6pcs+1bag
Retail Price $67.50
Your Price $34.00
Your Discount 49.63%
Highest dollar savings.
If you want to treat yourself to something special. Go ahead. With these savings, these luxuries are finally within your reach. This is where you can find the best dollar savings online.

Estee Lauder Travel Set: Cream+Perfecionist+Cleanser+Lotion+Eye MU Re.+Lip Gloss+Eye Shadow 7pcs+1bag
Retail Price $92.00
Your Price $60.00
You save $32.00