Equals or less in if sentence doesn't work

So I've made a simple shop to buy an upgrade for a game I'm making. When I have the right or more amount of cookies I can buy the upgrade and it does show up the message box, but if I have less it doesn't do anything. No message box or anything.

public void button1_Click_1(object sender, EventArgs e) //2CookiesPerClick
    {
        for (MessageBox.Show("Checking..."); cookies > 9;n++)
        {
            if (cookies > 9)
            {
                panel1.Hide();
                cookies -= 10;
                MessageBox.Show("You bought 2 Cookies per Click!");
            }
            if (cookies < 9)
            {
                button1.Show();
                label2.Show();
                MessageBox.Show("You don't have enough cookies to buy this upgrade!");
            }

        }

    }