A better alternative to use is stretch mark removal creams which are made specifically for preventing and eliminating stretch marks. It basically works by increasing the elasticity of the skin so that it is more resistant to tearing. This is not needed for regular use, but for instances when you are expecting your skin to stretch dramatically, it would be a great in helping prevent skin from tearing and eventually forming stretch marks.
Collagen and elastin are the important proteins needed by the skin to make them more elastic. Some stretch mark creams work by supplying the skin with these proteins. Others on the other hand, work by stimulating the body to produce more of these proteins so increase the support of the skin.
Aside from just increasing the elasticity of your skin, stretch mark creams also help nourish your skin so that it does not become rough and dull looking. It also moisturizes the skin to keep it supple and smooth to touch. This way, you won't have to worry about your skin looking bad as a sacrifice to increasing its elasticity.
Keep in mind that during pregnancy, your baby may be affected by the things that you put into your body. Regular creams may contain ingredients that are safe for the adult, but not safe for a growing fetus. Stretch mark creams take this into account and you can be sure that they are completely safe to use even during pregnancy.
By using these specialized creams, you are greatly reducing the risk of stretch marks forming, but it does not mean that it will work 100% of the time. There are times when the skin can be stretched past its limit no matter what you try to do. When this happens, the dermal layer of the skin can still break and resulting in the formation of stretch marks.
Just because it is not a guarantee that you won't be forming stretch marks, it does not mean that you shouldn't be using these creams. It still decreases the chances that you will form stretch marks compared to if you don't use any cream at all. Just be sure that the cream that you are using is fairly popular so that the chances that it will work are also higher.
When expecting stretch marks to form, don't continue using your regular creams as this will have very little effect in reducing the risks. Switch to using stretch mark creams so that you have a better chance in fighting against the effects of increased stretching of the skin.