Facial hair growth is primarily determined by:
* Genetics: Your family history plays a significant role.
* Hormones: Androgens like testosterone are responsible for hair growth, including facial hair.
* Age: Facial hair typically starts appearing during puberty and continues to grow throughout your adult life.
While marijuana can have some hormonal effects, it does not directly influence facial hair growth. Any perceived connection is likely due to coincidence or other factors.
If you're concerned about your facial hair growth, it's best to consult a medical professional.