Some things in nature can hurt you.

Natural ingredients could be causing or worsening your acne, sensitive skin, psoriasis, eczema, or hyperpigmentations.
While natural is WONDERFUL — eating natural, less processed foods so important for your health and using skin care with more natural, less processed ingredients can also be good (chemicals used in processing can be even more allergenic than the ingredient itself), natural does not mean hypoallergenic…and many natural ingredients are common allergens.
To learn more about what hypoallergenic means and how it can help several skin problems, check out Hypoallergenic: What Is It Really?
To learn more about the difference between hypoallergenic and natural, check out Is Natural Hypoallergenic? The Answer May Surprise You (But Shouldn’t)