Oil prices fell on Thursday as a rebounding dollar and Kuwait's stance that OPEC had no choice but to keep producing in an oversupplied market undercut a rally from the previous day.
U.S. crude for April delivery closed down 70 cents, or 1.57 percent, at $43.96 a barrel. It touched a session low of $42.75 earlier.
Brent for May delivery fell to a fresh session low below $54 on Thursday afternoon, before recovering to trade down $1.50 at $54.46 a barrel. Brent rose almost 4.5 percent on Wednesday.
Benchmark Brent oil and U.S. crude were down about 2 percent each, weighed by the dollar's rise against most currencies after the greenback's biggest tumble in 18 months on Wednesday.
In the previous session, Brent rose nearly 5 percent and U.S. crude about 3 percent on the dollar weakness.
"It's dollar play all over again today," said Phil Flynn, analyst at the Price Futures Group in Chicago. "The fact that the oil market is oversupplied is a given, so the only real variable now are currency moves and how they impact commodities demand."
A stronger dollar weakens demand from holders of other currencies for commodities denominated in the greenback. The dollar rose 2 percent against the euro on Thursday, after its selloff on Wednesday on disappointment over the lack of a clear timeline for a U.S. interest rate hike.