Dr. Priyanka Reddy | MBBS MD DVL on Instagram: "Rating of these treatments are in comparison to other treatments mentioned here not that they are fully safe. All these will lead to hair damage, breakage and dryness when overdone or done without proper care or in wrong hands. Keep these treatments to as minimal as possible. Keratin – Instant smoothness, frizz reduction, but contains formaldehyde or derivatives — a known irritant and potential carcinogen. Over time, it can dry out hair, causing br