Hair fall during the second trimester is quite common and is usually due to normal hormonal changes in pregnancy. Most cases are temporary and improve after delivery. Q-Sera Hair Serum contains ingredients such as Acetyl Tetra Peptide 3 and Biochanin. These are mainly used in topical hair care products and are generally considered to have very low absorption through the scalp. Because of this, they are not expected to cause harm to the baby when used in small amounts on the skin. However, there is limited scientific research on the safety of these specific ingredients during pregnancy. For this reason, it is best to use any cosmetic product cautiously. If you choose to use it, apply only as directed and avoid using it on irritated or broken skin. For reassurance, you may also discuss this with your gynaecologist.