The Ganesh Gayatri Mantra is also believed to be extremity potent and most powerful in negating the ill effects of having an inauspicious Mangal [Mars] in the Horoscope. Those people who have been diagnosed as Manglik will most certainly benefit from the chanting of the Ganesh Gayatri Mantra. Mangliks or people having Mangal Dosha are those people who have the planet Mangal positioned in the first, fourth, seventh, eighth and twelfth House of their Lagna Kundali.
Some of the more important Ganesh Gayatri Mantras are given in this post – Here. The second version of the Mantra - Om Eka dantaya vidmahe - ॐ एकदान्ता विद्म.हे is the prescribed Ganesh Gayatri Mantra for the resolving the problems mentioned in this post.
People born under the astrological signs of Mesh [Aries] and Vrischika [Scorpio] will most certainly benefit from the chanting of this Mantra. These people are advised to chant the Mantra with complete concentration everyday or if that is not possible then at least on Tuesdays and on the day of Sankashti Chaturthi, which falls on the fourth Tithi of the Krishna Paksha or the Dark Half of the Hindu Lunar Month.
The full benefits and the Sadhana procedure for the commencement of the chanting the Ganesh Gayatri Mantra is given in this post- Here.