Islam generally encourages Muslims to appear neat, tidy and well groomed; this applies equally to males and females.
Greater emphasis in this matter, however, has been placed on married couples more than ot ers; the Prophet (peace and blessings be upon him) set the perfect role model for all married couples when he said, “I prepare myself for my spouse, and she prepares herself for me!” The reason for this is not hard to comprehend as such appearance may go a long way in contributing towards martial stability and fulfillment as the spouses are supposed to serve as garments of protection for one another.

As for women wearing make-up, it should be clear that a woman is not allowed to wear cosmetics or make-up in public where she will be seen by men. If she wears make-up in mixed company, she should cover her face. If a woman is sure that no man will see her and only women will see her, then she can wear make-up, but this should be done in a moderate way.
In this regard, Dr. Muzammil H. Siddiqi, president of the Fiqh Council of North America, states: “First of all, it is permissible for a woman to use cosmetics and lipstick to beautify herself.. Of course one has to make sure that the cosmetics one is using do not contain anything that is considered unclean and prohibited in Islam. Some cosmetics might contain products taken from the pig. They are prohibited and should not be used at any time.

Secondly, I want to emphasize that although women are allowed to use lipstick or other cosmetics to beautify themselves, however, like all other things in Islam, this should also be done in moderation. Too much involvement in cosmetics and wasting too much money and time on these things is not acceptable in the Islamic value system. Islam wants to develop in its followers, both males and females, a mindset of modesty, moderation and simplicity.
When Muslim women go outside their homes, especially in mixed gatherings, then they should be more careful about their appearance. Their appearance should not be to show off or to invite the glances of men towards them, but to keep their own dignity and honor. They must guard the purity of their own selves as well as the purity of the society around them. Muslim women in America frequently go to their Islamic centers and mosques, and we actually encourage them to do so, because this is necessary for their own and their family’s Islamic education, but they must come to the Islamic centers in very modest Islamic dress and appearance.”