There is a link between aging and collagen production. We all know this fact. But do you really know what happened when you take collagen supplements on a regular basis? Well, let’s see the reality today.
Imagine. You woke up early in the morning. And when you see your face in front of the mirror while brushing, you just shocked!
Oh, mah God! “What happened to my face?” It’s looking more juicy, shiny, and tighter. Perfecto!
“My old sagging skin has gone.” – You thought – “But how?” “Did I take any collagen supplement last night?” “Nope, it’s not possible.”
Well, these are all illustrations and nothing real.
But, do you thinking, is it possible? (I heard…)
This is considerable, right? Yes, because collagen is the most beneficial protein in our body, yet including this in our skincare routine, is it workable?
These are a few questions we think frequently whenever we hear about the beneficial effects of collagen production in aging. And no more confusion. Finally, I got the eye-opening answer. You are curious, right? Now, let’s know the fact, whether or not our skin can absorb the collagen peptides.
What is Collagen?
Before you jump directly to the answer, let’s see what collagen is. Collagen is a fibrous protein present abundantly in our body as a major structural protein. Further, collagen supports several tissues, such as teeth, skin, and tendons.
There are about 26 different types of collagens that are, however, grouped into eight families. There are some configuration differences in each type, but have the same repetitive amino acids majorly, glycine, proline, and hydroxyproline.
Type I and Type II collagens form about 90% of the skin dermis. This is the reason why cosmetic industries greatly apply to collagen.
These proteins have multiple uses in our bodies. Most probably, these are used for repairing and replacing different tissues.
Several plant and animal sources are rich in the majority of collagen.
Bovine, which is the most common collagen from animals, is used in several ointments for external wounds and burns healing.
Further, type I, II, III, V, XI collagens are having a function in tissue regeneration, cartilage repair, and arthritis treatment, the corneal treatment also plays a significant role in curing osteoarthritis. Various other types of it have different other benefits. 
According to Dr. Ohara Aivaz – a famous dermatologist, ” Starting in our mid-20s, we slowly begin to lose collagen”. “For women, we can lose up to 30% of our collagen production in the first 5 years of menopause.” This shows how important it is to take collagen through our nutrition to fulfill this gap in our bodies.
This is another reason behind, application of collagen peptides in several cosmo products. Now, let’s know what different studies explain the absorption of collagen in the skin.
What Several Studies Say about the Efficiency of Collagen Peptides?
Collagen has a high demand in the biomedical and cosmetic industries. Well, this is because of its high efficiency for skin, bioactivity, biocompatibility, and weak immunogenicity.
Nowadays, several techniques like galvanic electricity, skin peelings, oral hydrolysate biomolecules supplements are being employed for enhancing skin condition. However, all of them use the same principle of replacement of collagen or increased production of it.
Several studies claim that a hydrolyzed protein ingestion can replace the damaged fibers with newer ones. Therefore, we can conclude that collagen supplements can heal our defective tissues. 
Natural collagen has less solubility in water as it has a massive molecular weight. This is a major difficulty in applying collagen directly into our skins as it cannot absorb in its native form. Therefore, applications in cosmetic industries needed to break it into the hydrolyzed peptide form. Peptides are the simpler form of proteins. [2,6]
Yet, these molecules are needed to be of smaller size to penetrate deeper into the skin. Collagen Peptides are absorbed into the skin in three ways. But our skin acts as a barrier for the applied cosmetic products. 
Thus, penetrating the skin cells is quite challenging for those collagen Peptides. Hence, evolved various bypass methods like microneedle array or electrical methods. 
Besides, another study evidences the application of hydrolyzed collagen Peptides from deer sinew to the mouse. It was found that Peptides of smaller molecular weight can prevent skin from oxidative stress and premature aging by penetrating deeper. 
Some other researchers claim the oral supplement of collagen can readily help cure skin conditions. This further shows the beneficial action of collagen Peptides in enhanced skin elasticity, wrinkling, and skin hydration by oral consumption. [7,8,9]
Still, either way, collagen supplements may have some side effects on our body and skin; therefore, without recommendation, it’s unsafe to use it directly.
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What to Keep in Mind While Using Collagen Peptides for Skin issues?
Well, the answer for using collagen peptides in moisturizers, sunscreens, and other skincare products is Yes. But, if you are using and there are no results at all, then the wiser decision is to quit.
Further, note that the collagen-rich drugs or medications are not regulated by the FDA (Food and Drug Administrator). Oral supplements should not be taken directly without consulting an expert.
However, it would be best if you focused on taking a balanced diet in order to get the collagen requirements safely. A balanced diet means taking the right amount of carbohydrates, fats, and, most importantly, proteins, including both animals and plant-based foods.
Bioscience research on collagen peptide ingestion on UV-B- Induced skin damage shows that taking collagen through dietary supplements can be helpful in protecting the derma against the most harmful sun radiation. 
If you still want to know which collagen-rich skincare products will really be helpful in decreasing skin problems, including aging, then here are some recommendations.
Some ingredients such as retinol and tretinoin are rich in Vitamin A, and thus, you should look for products having these components. If you use the serum for your skin, then you must watch for Vitamin-C as it facilitates the production of collagen in our skin and slower down aging.
Moisturizers that increase the skin’s water content are also beneficial in preventing you from aging as they contain hyaluronic acid and glycerin.
Also, sunscreens with high SPF helps to protect your existing skin collagens from breaking by providing a membranous layer against Ultraviolet rays.
Hence, keep these in mind while choosing the right skincare product and remain away from overnight result claims.
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What should you eat for improving collagen production and lowering aging process in the body?
Our skin glows better from inside. That means food and nutrition implement is the real way of fulfilling collagen requirements in the body.
So, if you have sagging, crepey skin, shrinking, weakening muscles, joint, or GI problems for thin lining, you should include these food products in your diet.
As we discussed before, collagen is made up of amino acids. Thus, the natural production of collagen will occur in our body through several amino acid metabolic pathways and it is essential to prevent aging. What if, there are no abundant amino acids present. That time, of course, the above said health issues happen.
So, to increase collagen in our body, we have to increase amino acids, which only take place by taking protein-rich foods.
Several high-protein foods include chicken, mushroom, egg albumin(white), bone broth, fish( also rich in omega-3 fatty acids), citrus fruits like lemon, orange, limes, grapefruits, and also several berries like raspberries, blueberries, and blackberries.
Citrus fruits and berries are richer in Vitamin C, as we explained, have a high capacity to induce collagen production.
Various other foods such as garlic, bell peppers, nuts, beans, tomatoes, green leaves, and some other fruits like kiwi, mango, guava, and pineapple also work great for building collagens from amino acids.
Besides, you should never talk about refined products, including sugar and other carbohydrates. These never help in making collagen, rather helps in its degradation.
Skin is the largest organ in the human body, thus the most exposed one. It always protects us from several external agents and harmful UV-radiation.
Further, it provides us with the first line of defense against all kinds of pathogens, including bacteria, fungi, and viruses. It is the only organ with regenerative power, and thus, we must be concerned about its damage.
Collagen is the major protein whose production can rejuvenates our skin and prevents us from aging symptoms like fine lines and wrinkles. Yet, a dietary supplement is better than taking oral medications, or direct application on the skin.
Several other research pieces are still going on for supplying enough evidence of how beneficial collagen peptides are in several cosmological applications. It indicates that it has a huge future perspective of using in cosmetic industries.