(03-10-2016, 03:07 PM)steeleshaves Wrote: Chris,
I think this comes down to nature. Natural hair by it's composition, is made to repel and shed a certain amount of "debris", oil, etc. Think of a dogs coat or a horses coat when you wash them. It takes a lot of water and rubbing in of shampoo or oil to get that material in the hair because the hair itself has properties designed to resist foreign material. Synthetic brushes however, are designed to soak up material with ease, think of makeup brushes here. They are specifically engineered to accept a material for application. Shaving brushes out of necessity back in the day were made of the materials they had at hand (animal hair: boar, badger, horse, etc).... but, there is a reason you don't see boar and badger make up brushes in your wife's medicine cabinet because synthetics do a better job of accepting the material for which they are applying.
I think the opposite might be true. Natural fibers are absorbent, so soap and water have a tendency to stick to the hair. Hence boar and badger have to become really saturated with product before they can be coaxed to release it. Synthetics, on the other hand are hydrophobic, so less product is needed to saturate the brush and that product releases more readily.
No offense to anyone, but personally I find synthetics to be rather boaring (hee). I like cotton sheets, cotton clothes, down pillows, and badger and boar brushes. Synthetics are great for raincoats, athletic clothing, and travel brushes because of their hydrophobic properties. But if you want something to feel good next to your skin, natural fibers are it. At least for me they are.
I also really enjoy the variety available with natural brushes. I can go gel-like slick, silvertip soft, a bit scrubby, a lot scrubby, scritchy, exfoliating, firm massage - I love it. Every day is a new sensation.
Although, I usually recommend a synthetic to new shavers because the synthetics are easier to use and to care for.