Mentha oil futures for April fell Rs 27.80, or 2.41%, to Rs 1,121.60 per kg in 436 lots.
At the Multi Commodity Exchange (MCX), the March contract traded Rs 24.50, or 2.14% lower at Rs 1,120.10 per kg in 874 lots.
Prices fell due to profit- booking by speculators at existing higher levels.
Increased arrivals from producing region Chandausi in Uttar Pradesh also affected the trade.