The stock surge to 127.00 euros in morning deals on the Paris stock exchange which showed an overall loss of 0.32 per cent.
The rally also comes on the heels of L'Oreal's six-month earnings report which was released after the market closed yesterday.
For the six months ending June 30, L'Oreal's said its net profit rose 5.2 per cent to 1.7 billion euros (USD 2.25 billion), thanks largely to strong sales.
In an interview published in newspaper Les Echos today, L'Oreal chief executive Jean-Paul Agon said the company may consider buying Nestle's 29.3-per cent stake in the group.
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"We have the resources to allow us to consider all types of opportunities. For us, all options are on the table," he was quoted as saying.
This fuelled market speculation after Nestle's chairman Peter Brabeck had said yesterday that the 10-year mutual right of first refusal for the holding would not be extended when it expires next year.
In its results for the first half of the year, L'Oreal confirmed its target for 2013, saying it was "confident in the group's ability to once again outperform the market, and to achieve a further year of growth in sales, results and profitability".
The group recorded a "record" operating profit in the period of around 2.0 billion euros, amounting to 17.4 per cent of sales.