When looking for a suitable lip filler, it's important to consider which brand. Some brands such as Juvederm are proven to last longer than other brands. Juvederm Ultra Smile, Restylane Kysse and HYACorp Lips are specially formulated to increase lip volume, hence their name.
Some aestheticians also choose to combine more than one product.
If you are looking to increase volume in your lips for the first time, you may want to start with 2 x 0.55ml, which gives you one syringe per lip. Other customers prefer 1ml in each lip, and will purchase 2 boxes of Restylane Lyps Lidocaine.
There are many different combinations of lip volume, as all lips are different. Your bottom lip may already be naturally plump, so you may just want filler for your top. We can't advise how much filler, so you will need to do research and know how much filler you need for both top and bottom lips.
There are many treatments to consider when it comes to lips; find out if the cupids bow is the most attractive facial feature.