Hello friends! My name is Edgar, I am a biotechnologist and in the last few years I have specialized in the designing of skincare products. You can watch my introduction video if you want to know more about me or the goals of this channel. While in San Diego, the Professor I was working with, Dr. Bizzoco, introduced me to the world of skin care, which fascinated me. Today I will show you one of the first recipes that he taught me, the Vitamin C Serum, with a small improvement that will make a huge difference. I wanted to start with this one because it’s the simplest one out there, and companies sell it for over 100$ an ounce, which is 30 millilitres, a tiny bottle like this. I can assure you, for that price you will be able to make the Serum for years. Later you can check my website in the description if you want to buy any of the ingredients in this tutorial. So, why vitamin C? First of all it has anti-inflammatory properties, antioxidant properties, and it doesn’t technically help your body produce collagen, but it does prevent that your body stops producing it. It also has a slight sun protection factor but only filters certain rays, so you should never replace it with sunscreen. Before I start, I’m going to use the International System of Units, that means grams, millimeters… In my description and also in my website you will find the same recipes with different units and also different concentrations. The percentage of vitamin C to water we are aiming for is about 12%. It shouldn’t exceed 20% as vitamin C is still an acid chemically known as ascorbic acid, which is what you’ll find in most of the labels of your beauty products and as any acid, it can irritate your skin in high concentrations. Different skins have different sensitivities, so it’s always smart to start with a lower concentration, and try it out in part of your body that is more sensitive, like the back of your wrist. Going over 20% would irritate your skin for no reason, as your skin is not capable of absorbing all that vitamin C at once. So first, I’m going to show you how to do it yourself at home, and then I will answer some frequently asked questions about when to apply, what is collagen and how does it work or what type of vitamin C is better. I will also be happy to answer to any questions in the comments. So let’s get to work! I’m going to be making a total f a 100mL, so first we have to measure 12% of a hundred grams, which is 12 grams of Vitamin C. You can also measure it directly into the bottle. For that, you will have to tare it with your scale with the funnel, like so. And then you can already add the 12 grams of Vitamin C And now, the twist. You’ve already seen how to make this in many other YouTube tutorials. But I’m going to show you how to make it 20 times more efficient with only two steps. The first ingredient that we are going to use is Zinc. To create new collagen first, you have to destroy the old one. Zinc is essential in that process. This is why we’re going to use 1-2% of a Zinc salt. I am going to use Zinc Sulphate, in the powdered form. This is the most commercially available form. In our preparation we want one percent of a hundred millilitres. This is why we are going to use 1 gram of Zinc. If you don’t have Zinc in the form of powder, you can find Zinc pills in any nutrition store and grind them up. Beware, because they have excipients which are not harmful, they hold the pill together, but they may make a sediment in your flask. So now we have to do exactly the same thing. We have to tare the bottle with the funnel, and then add 1 gram of Zinc. And the second ingredient that will improve greatly our mix is Tyrosine. Tyrosine is an important element needed for promoting cell renewal and the production of proteins involved in skin repair. We will use 3-5% so for our 100 gram preparation we will use five grams, which will make for 5%. There’s a con, Tyrosine doesn’t mix well and it could end up ruining our mix, so don’t risk it at at first, start with lower concentrations like one or two percent and check that it has dissolved properly. So now using the same procedure we’ll add 5 grams of Tyrosine. And now, we are nearly done, all that’s left is to fill up the bottle up to the 100 mL mark with water. If you are wondering about the chlorine, it doesn’t really matter if you use tap water, bottled water, distilled water… You are already showering with tap water, so the chlorine in this is not going to make a huge difference. So here we go, your 300$ product that you can make any time in less than five minutes. Vitamin C oxidizes really quickly due to heat, light and air exposure, which makes it lose its potency. So if we are using a clear bottle, we are going to cover it in foil and we can even place it in the fridge between uses to make it last longer. One clear sign to know if it has oxidized is because it turns orange. You don’t need to throw it away immediately but it does mean the vitamin C content has decreased. You can also use a dark glass bottle like this to preserve it better and to keep it from the light. To apply it simply pour it on your hand or a cotton disk and spread evenly across your clean face or body. At first you will feel a tingling sensation, meaning that it is successfully working and your skin will slowly adapt to it. You might have some redness at first because of its acidity, but it will also go away. If it doesn’t, try with a lower concentration everyone has a different skin sensitivity. After some weeks you can try increasing the concentration to see if your skin has adapted to it. Don’t worry if you don’t see results immediately, the better your skin already is, the more it will take for you to realize. You can also use a moisturizer once the serum is dry, but that won’t be necessary with the homemade Vitamin C cream I will show you in one of my next videos. Keep the rest of the ingredients in an airtight container and store them in a cool dark place. It oxidizes slower in powder form but it will still loose its properties. Ok, so now you may have some questions, for example: when should you apply it? Ideally you should apply it every eight hours, although it is not necessary. Since the Sun lowers the Vitamin C levels in our skin, the best is to apply it after sun exposure at night. You can complement it with moisturizer but wait for the serum to dry, since it will decrease the absorption of vitamin C. Another question you may ask yourself is: which type of vitamin C is better? Some of you might know the different types of ascorbic acid, it can come in different forms for example bound to Magnesium in the form of Magnesium ascorbate, removing part of its acidity. It doesn’t really matter, because there’s always the ascrobic portion which is the one we are interested in. You don’t have to worry about the D-ascorbic acid because it is not commercially sold as vitamin C. As far as natural versus synthetic… for a Vitamin to be labeled natural it only has to contain 10% of the ingredient from a natural source, let’s say: an orange. So you are always going to get synthetic Vitamin C in your products, which is in fact… not bad. Several studies have proven that they have exactly the same effect and same abortion, so again: you should not worry about that. Either way, don’t be fooled. Vitamin C is white. Some companies sell it with orange colorant so you don’t realize the oxidation process. Another question: should you use the serum if you are already eating plenty of vitamin C on your diet? When we apply it on our skin, Vitamin C is 20 times more effective than if we ingest it. We also have to consider that one orange contains approximately 70 milligrams of Vitamin C that will spread throughout our whole body. The vitamin C content in one orange is the same as only 11 drops of our serum! But don’t stop eating those oranges! Vitamin C is useful for a thousand more things, but for the skincare purpose it is just simply better to apply it directly. A diet rich in Vitamin C combined with the serum is the best way to get all the benefits. We’ve talked about collagen, both Vitamin C and Zinc are involved in its production, so what is it and what do we need it for. Skin consists of two layers, the outermost layer is the epidermis, which is made up mainly of dead hardened skin cells that protect the body from outside elements. The next layer is the dermis, which contains a kind of protein called collagen as well as fibers that give skin its elasticity. This collagen is the base of our skin and gives it its firmness. As you can see it’s a basic block in healthy skin. The main cause of wrinkles is the loss of collagen through the years, mainly because of these reasons: We start producing less when we age, starting at 21, when we smoke, when we are exposed to pollution… So promoting its renewal is very important for a healthy skin. So that is all! If you have any questions please leave a comment. You can buy all the ingredients in my website, as well as the whole discounted homemade serum pack. You can also find the ingredients in mostly any health shop. So if you liked this video and found it informative, please subscribe so I can keep doing what I love, which is sharing knowledge and stopping misinformation. See you in the next video!