Many factors affect beard growth in men, such as male hormones (testosterone and DHT) and proteins like biotin. Thus maintaining a healthy diet that helps regulate hormonal balance and provides essential nutrients would be an answer to how to increase beard growth naturally.
Beard growth is directly related to hormonal stimulation. There are two types of androgenic hormones: Testosterone and dihydrotestosterone (DHT). An enzyme called 5-alpha reductase converts testosterone into DHT. This, in turn, binds with hair follicle receptors and stimulates hair growth.
If you are wondering how to grow beard naturally, then check your diet. Include a lot of protein in your diet. Hair contains a protein called keratin, so natural proteins coming from lentils, fish and nuts can be the answer to how to grow facial hair easily.
Sulfates are chemicals that combine the oil and water aspect of your shampoo. It's an emulsifier, a foaming agent, and pretty much the 'detergent' that cleans your hair. Trust us when we say detergents. That's how harsh these chemicals are when applied to your hair.