* Subjectivity: Preferences are highly personal and vary greatly. What one person finds attractive, another might not.
* Defining "like": Does "like" mean they only find girls without makeup attractive, or that they find them attractive among other preferences?
* Global Population: Surveying the preferences of every guy in the world would be logistically impossible.
* Changing Opinions: Preferences can change over time.
General Trends and Observations
That said, here are some general trends and observations:
* Many guys appreciate a natural look: Surveys and anecdotal evidence suggest that a significant portion of men do appreciate women who wear little to no makeup. They may find it refreshing, genuine, or more approachable.
* Confidence is key: More often than not, guys are attracted to confidence. A woman who feels good about herself, with or without makeup, is generally more attractive.
* Varying levels of preference: Some men prefer a completely bare face, while others may prefer a "no-makeup makeup look" (subtle makeup that enhances features without appearing obvious).
* Cultural differences: Beauty standards and preferences can vary across different cultures.
* Maturity: Younger men are more likely to appreciate makeup, while as men mature, they are more likely to like natural looks.
In conclusion: There is no definitive number, but it's safe to say that a significant portion of men worldwide appreciate women who choose to go without makeup.