Conclusion
If your hair is curly, frizzy, coarse, or damaged from color or bleach and is thin in terms of density on your head, you might want to consider keratin treatments. Keratin may not be necessary for thin, straight hair, and alternative volumizing methods can be helpful.
Before undergoing this operation or utilizing keratin-containing products, find out if they are safe. Maintaining a healthy diet and seeking out further solutions to the problem of thinning hair can both be beneficial.
References;
[1] https://www.healthline.com/health/keratin
[2] https://onlinelibrary.wiley.com/doi/abs/10.1111/ics.12483
[3] https://www.sciencedirect.com/science/article/pii/S2215017X18302017?via%3Dihub
[4] https://www.researchgate.net/journal/Journal-of-Cosmetic-Dermatology-1473-2165
[5] https://www.webmd.com/beauty/laser-hair-removal