Hey! Just to let you know there is generally no point in taking collagen supplements, they are expensive and bring no benefits other than the placebo effect. People will happily make up all sorts of amazing claims about collagen supplements, but all they care about is getting your money.
Collagens are a form of protein, in fact one of the most common forms of protein in the human body. Type 1 collagen is found in the skin, blood vessels and bones etc, type 2 collagen is found in the cartilage and many other types of collagen are found in the body, but type 1 is the most common. Collagen and in fact all proteins are large molecules and cannot be absorbed by the body without being broken down into smaller parts called amino acids. Amino acids are the building blocks of protein. This is why we have the digestive system to break down large molecules into small molecules, including proteins like collagen to amino acids. If they were not broken down then they would just pass straight through us.
Once the amino acids are absorbed into the body they then go to wherever they are needed most, that may be to build collagen in your skin or hair, but it may be to any other part of the body that your body needs amino acids. It doesn't matter where that protein has come from, meat, nuts, collagen supplements or protein supplement etc. , all of it must be broken down into amino acids to be absorbed. Your body cannot differentiate that the amino acids it has absorbed have come from a collagen pill or from meat, all your body knows is that these amino acids are to be used to build proteins, and it will send them to wherever your body needs to create more protein. So as long as you eat enough protein, which most of us in the western world do, you really don't need collagen supplements. Unless you are a body builder or have an unbalanced vegan diet, you eat enough protein.
I hope that makes sense. Please let me know if it doesn't! I hate to see people waste their hard earned money, there are many other things you can spend your money on that will make a difference to your skin, hair and nails. Collagen supplements are not it!
TL;DR
collagen = protein
protein = made of amino acids
Body cannot absorb protein as it is too large, must be broken down into individual amino acids
Your body doesn't know where the amino acids it absorbs are from and cannot direct them anywhere.
Amino acids absorbed from collagen supplements or meat or eggs etc are all treated exactly the same by your body, and are used where they are needed.
Collagen supplements do not directly benefit any particular area of your body, don't waste your hard earned money
legionathletics.com
Collagens are a form of protein, in fact one of the most common forms of protein in the human body. Type 1 collagen is found in the skin, blood vessels and bones etc, type 2 collagen is found in the cartilage and many other types of collagen are found in the body, but type 1 is the most common. Collagen and in fact all proteins are large molecules and cannot be absorbed by the body without being broken down into smaller parts called amino acids. Amino acids are the building blocks of protein. This is why we have the digestive system to break down large molecules into small molecules, including proteins like collagen to amino acids. If they were not broken down then they would just pass straight through us.
Once the amino acids are absorbed into the body they then go to wherever they are needed most, that may be to build collagen in your skin or hair, but it may be to any other part of the body that your body needs amino acids. It doesn't matter where that protein has come from, meat, nuts, collagen supplements or protein supplement etc. , all of it must be broken down into amino acids to be absorbed. Your body cannot differentiate that the amino acids it has absorbed have come from a collagen pill or from meat, all your body knows is that these amino acids are to be used to build proteins, and it will send them to wherever your body needs to create more protein. So as long as you eat enough protein, which most of us in the western world do, you really don't need collagen supplements. Unless you are a body builder or have an unbalanced vegan diet, you eat enough protein.
I hope that makes sense. Please let me know if it doesn't! I hate to see people waste their hard earned money, there are many other things you can spend your money on that will make a difference to your skin, hair and nails. Collagen supplements are not it!
TL;DR
collagen = protein
protein = made of amino acids
Body cannot absorb protein as it is too large, must be broken down into individual amino acids
Your body doesn't know where the amino acids it absorbs are from and cannot direct them anywhere.
Amino acids absorbed from collagen supplements or meat or eggs etc are all treated exactly the same by your body, and are used where they are needed.
Collagen supplements do not directly benefit any particular area of your body, don't waste your hard earned money
Collagen Protein Is a Waste of Money, Science Says
If you want to know what collagen protein is, why people take it, and whether or not it can benefit your body, you want to read this article.
this is great 
the reviews are so conflicting 
people have been writing how they feel amazing and see a difference in the first few days of taking collagen so I thought I would give it a go but to be honest iv been taking them a week now and I’m still waiting for this effect to happen 
I don’t think they are strong enough (stupid me) but as you say there’s so many different reviews on what’s best