3. Healthy hair has shine
This is simply not true for all hair. Shine is a function of how straight and how dark your hair is. For straight (and even natural straightened hair), having shine is a good indicator that the strands are relatively undamaged and can reflect light well. Some naturals refer to sheen instead of shine but for some hair, this would mean looking at an individual strand rather than the whole head. Having highly textured hair reduces the reflection of light and therefore shine is not really a measure of hair health for those with this hair.
4. Healthy hair behaves in a predictable way (i.e not unruly)
Many people yearn for hair which has a set behaviour when wet or dry but curly hair is not in this category. It is more likely to change depending on humidity and hair products especially the quantity of oils and humectants (including honey, glycerin and aloe vera).
There is some predictability with natural hair, for example if you wet it, it will shrink/curl up or if you attempt to comb it dry, it will be less flexible than if you sprayed some water or applied a conditioner or oil. However unless you are lucky enough to be in a place with constant humidity, it remains that natural hair especially when left open will change. This does not mean your hair is damaged, just that it is responding to its environments and the products applied to it.
5. Healthy hair gains length easily
Many people equate hair growth with healthy hair and the more rapid the growth, the better the care given to the hair. However, while healthy hair should gain length, this does not necessarily have to be fast. If your hair is finer, kinkier and more prone to split ends, taking care to actively trim your hair will slow down the time it takes to reach a certain mark (shoulder, armpit, mid back etc). This does not mean your hair is less healthy or growing slowly, all it indicates is that your hair ends require more maintenance. The concern should arise if your hair is stagnant for a long period and you are not cutting or trimming it to that length.
Ladies, how do you define healthy hair?