Over the past few years, peptides have played a major role in our cosmetics. However, few people know their potential in other areas. Peptides are a biological agent, which means they are present in our body. People often tend to confuse peptides with proteins, however, as a general rule, the peptide has less than 50 amino acids and doesn’t have the same secondary folding. Anything more than 50 amino acids are generally considered protein.
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Use of Peptide in Cosmetics
From using the products that “claimed” to be collagen stimulator to use of actual biological peptides, cosmetic science has come a long way. The peptides in skincare are used for anti-aging properties and since they are hydrophilic (water-loving), they are easily used in cosmetic formulas. Although, their heat sensitivity makes them a poor candidate to be used alone and therefore they are combined with other heat resistant compounds.
Peptides in skincare can be used in 4 different ways
- Skin tightness: An extreme example of a skin tightening agent is Botox. However, the goal of peptides in skincare is similar i.e. to contract the facial muscle to get rid of the wrinkly appearance
- Collagen production: The other way through which peptides work is by the production of fibers like collagen and elastin. This helps to provide firmness in the skin and make it look more fuller
- Healing: A third way by which peptides work is by bringing elements like copper and magnesium and promote procollagen synthesis and wound healing. A good example is their use in diabetic ulcers.
- Breakdown inhibitors: As our body produces collagen, there are also enzymes in our body to breakdown collagen. The fourth method by which peptides work is by inhibiting those destructive enzymes.
Apart from skin, peptides have a good effect on the growth of hair and nails. As well as, it stimulates the production of melanin that helps the skin from sunburn.
Used of Peptides as Food Additive
For many years, peptide aspartame has been used as a sweetener in various products. Made up of two amino acids, this peptide is used to give the same taste as sugars while counteracting the side effects that come with sugar like obesity and diabetes. Further researches are done to find a similar peptide with sugar-like sweetness minus its disadvantages.
Like sugar, additional efforts are done to find a peptide replacement for salt. Dietary salt is linked with high blood pressure and its subsequent problems. Replacing it with peptide salt can be beneficial to decrease the burden of cardiovascular disease. Although, there is a lot of research still required to make this applicable.
With recent advancements, certain peptides called Antimicrobial peptides are also available and as the name implies they fight bacteria, their use, however, is limited due to their selected uptake by intestines making them less bioavailable.
Some peptides, due to their antioxidant properties are used in food to improve their shelf life, as well as some of them, are used as hypoallergenic. Whereas peptides that stimulate the production of Reactive Oxygen Species (ROS) are used to improve the immune defense of the body.
If you wish to know more about peptides and research liquids, the Loti Labs Blog has a comprehensive library of peptide profiles that can enhance your knowledge of peptides.